21438360

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:178

約数の個数: 192

約数和(自身を含む): 76826880

約数和(自身を除く): 55388520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 31, 34, 36, 40, 45, 51, 60, 62, 68, 72, 85, 90, 93, 102, 113, 120, 124, 136, 153, 155, 170, 180, 186, 204, 226, 248, 255, 279, 306, 310, 339, 340, 360, 372, 408, 452, 465, 510, 527, 558, 565, 612, 620, 678, 680, 744, 765, 904, 930, 1017, 1020, 1054, 1116, 1130, 1224, 1240, 1356, 1395, 1530, 1581, 1695, 1860, 1921, 2034, 2040, 2108, 2232, 2260, 2635, 2712, 2790, 3060, 3162, 3390, 3503, 3720, 3842, 4068, 4216, 4520, 4743, 5085, 5270, 5580, 5763, 6120, 6324, 6780, 7006, 7684, 7905, 8136, 9486, 9605, 10170, 10509, 10540, 11160, 11526, 12648, 13560, 14012, 15368, 15810, 17289, 17515, 18972, 19210, 20340, 21018, 21080, 23052, 23715, 28024, 28815, 31527, 31620, 34578, 35030, 37944, 38420, 40680, 42036, 46104, 47430, 52545, 57630, 59551, 63054, 63240, 69156, 70060, 76840, 84072, 86445, 94860, 105090, 115260, 119102, 126108, 138312, 140120, 157635, 172890, 178653, 189720, 210180, 230520, 238204, 252216, 297755, 315270, 345780, 357306, 420360, 476408, 535959, 595510, 630540, 691560, 714612, 893265, 1071918, 1191020, 1261080, 1429224, 1786530, 2143836, 2382040, 2679795, 3573060, 4287672, 5359590, 7146120, 10719180, 21438360]

約数ペア:

[(1, 21438360), (2, 10719180), (3, 7146120), (4, 5359590), (5, 4287672), (6, 3573060), (8, 2679795), (9, 2382040), (10, 2143836), (12, 1786530), (15, 1429224), (17, 1261080), (18, 1191020), (20, 1071918), (24, 893265), (30, 714612), (31, 691560), (34, 630540), (36, 595510), (40, 535959), (45, 476408), (51, 420360), (60, 357306), (62, 345780), (68, 315270), (72, 297755), (85, 252216), (90, 238204), (93, 230520), (102, 210180), (113, 189720), (120, 178653), (124, 172890), (136, 157635), (153, 140120), (155, 138312), (170, 126108), (180, 119102), (186, 115260), (204, 105090), (226, 94860), (248, 86445), (255, 84072), (279, 76840), (306, 70060), (310, 69156), (339, 63240), (340, 63054), (360, 59551), (372, 57630), (408, 52545), (452, 47430), (465, 46104), (510, 42036), (527, 40680), (558, 38420), (565, 37944), (612, 35030), (620, 34578), (678, 31620), (680, 31527), (744, 28815), (765, 28024), (904, 23715), (930, 23052), (1017, 21080), (1020, 21018), (1054, 20340), (1116, 19210), (1130, 18972), (1224, 17515), (1240, 17289), (1356, 15810), (1395, 15368), (1530, 14012), (1581, 13560), (1695, 12648), (1860, 11526), (1921, 11160), (2034, 10540), (2040, 10509), (2108, 10170), (2232, 9605), (2260, 9486), (2635, 8136), (2712, 7905), (2790, 7684), (3060, 7006), (3162, 6780), (3390, 6324), (3503, 6120), (3720, 5763), (3842, 5580), (4068, 5270), (4216, 5085), (4520, 4743)]