257323560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:388

約数の個数: 256

約数和(自身を含む): 911554560

約数和(自身を除く): 654231000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 31, 34, 39, 40, 51, 52, 60, 62, 65, 68, 78, 85, 93, 102, 104, 120, 124, 130, 136, 155, 156, 170, 186, 195, 204, 221, 248, 255, 260, 310, 312, 313, 340, 372, 390, 403, 408, 442, 465, 510, 520, 527, 620, 626, 663, 680, 744, 780, 806, 884, 930, 939, 1020, 1054, 1105, 1209, 1240, 1252, 1326, 1560, 1565, 1581, 1612, 1768, 1860, 1878, 2015, 2040, 2108, 2210, 2418, 2504, 2635, 2652, 3130, 3162, 3224, 3315, 3720, 3756, 4030, 4069, 4216, 4420, 4695, 4836, 5270, 5304, 5321, 6045, 6260, 6324, 6630, 6851, 7512, 7905, 8060, 8138, 8840, 9390, 9672, 9703, 10540, 10642, 12090, 12207, 12520, 12648, 13260, 13702, 15810, 15963, 16120, 16276, 18780, 19406, 20345, 20553, 21080, 21284, 24180, 24414, 26520, 26605, 27404, 29109, 31620, 31926, 32552, 34255, 37560, 38812, 40690, 41106, 42568, 48360, 48515, 48828, 53210, 54808, 58218, 61035, 63240, 63852, 68510, 69173, 77624, 79815, 81380, 82212, 97030, 97656, 102765, 106420, 116436, 122070, 126139, 127704, 137020, 138346, 145545, 159630, 162760, 164424, 164951, 194060, 205530, 207519, 212840, 232872, 244140, 252278, 274040, 276692, 291090, 319260, 329902, 345865, 378417, 388120, 411060, 415038, 488280, 494853, 504556, 553384, 582180, 630695, 638520, 659804, 691730, 756834, 822120, 824755, 830076, 989706, 1009112, 1037595, 1164360, 1261390, 1319608, 1383460, 1513668, 1649510, 1660152, 1892085, 1979412, 2075190, 2144363, 2474265, 2522780, 2766920, 3027336, 3299020, 3784170, 3958824, 4150380, 4288726, 4948530, 5045560, 6433089, 6598040, 7568340, 8300760, 8577452, 9897060, 10721815, 12866178, 15136680, 17154904, 19794120, 21443630, 25732356, 32165445, 42887260, 51464712, 64330890, 85774520, 128661780, 257323560]

約数ペア:

[(1, 257323560), (2, 128661780), (3, 85774520), (4, 64330890), (5, 51464712), (6, 42887260), (8, 32165445), (10, 25732356), (12, 21443630), (13, 19794120), (15, 17154904), (17, 15136680), (20, 12866178), (24, 10721815), (26, 9897060), (30, 8577452), (31, 8300760), (34, 7568340), (39, 6598040), (40, 6433089), (51, 5045560), (52, 4948530), (60, 4288726), (62, 4150380), (65, 3958824), (68, 3784170), (78, 3299020), (85, 3027336), (93, 2766920), (102, 2522780), (104, 2474265), (120, 2144363), (124, 2075190), (130, 1979412), (136, 1892085), (155, 1660152), (156, 1649510), (170, 1513668), (186, 1383460), (195, 1319608), (204, 1261390), (221, 1164360), (248, 1037595), (255, 1009112), (260, 989706), (310, 830076), (312, 824755), (313, 822120), (340, 756834), (372, 691730), (390, 659804), (403, 638520), (408, 630695), (442, 582180), (465, 553384), (510, 504556), (520, 494853), (527, 488280), (620, 415038), (626, 411060), (663, 388120), (680, 378417), (744, 345865), (780, 329902), (806, 319260), (884, 291090), (930, 276692), (939, 274040), (1020, 252278), (1054, 244140), (1105, 232872), (1209, 212840), (1240, 207519), (1252, 205530), (1326, 194060), (1560, 164951), (1565, 164424), (1581, 162760), (1612, 159630), (1768, 145545), (1860, 138346), (1878, 137020), (2015, 127704), (2040, 126139), (2108, 122070), (2210, 116436), (2418, 106420), (2504, 102765), (2635, 97656), (2652, 97030), (3130, 82212), (3162, 81380), (3224, 79815), (3315, 77624), (3720, 69173), (3756, 68510), (4030, 63852), (4069, 63240), (4216, 61035), (4420, 58218), (4695, 54808), (4836, 53210), (5270, 48828), (5304, 48515), (5321, 48360), (6045, 42568), (6260, 41106), (6324, 40690), (6630, 38812), (6851, 37560), (7512, 34255), (7905, 32552), (8060, 31926), (8138, 31620), (8840, 29109), (9390, 27404), (9672, 26605), (9703, 26520), (10540, 24414), (10642, 24180), (12090, 21284), (12207, 21080), (12520, 20553), (12648, 20345), (13260, 19406), (13702, 18780), (15810, 16276), (15963, 16120)]