31430280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:140

約数の個数: 256

約数和(自身を含む): 119439360

約数和(自身を除く): 88009080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 31, 34, 35, 40, 42, 51, 56, 60, 62, 68, 70, 71, 84, 85, 93, 102, 105, 119, 120, 124, 136, 140, 142, 155, 168, 170, 186, 204, 210, 213, 217, 238, 248, 255, 280, 284, 310, 340, 355, 357, 372, 408, 420, 426, 434, 465, 476, 497, 510, 527, 568, 595, 620, 651, 680, 710, 714, 744, 840, 852, 868, 930, 952, 994, 1020, 1054, 1065, 1085, 1190, 1207, 1240, 1302, 1420, 1428, 1491, 1581, 1704, 1736, 1785, 1860, 1988, 2040, 2108, 2130, 2170, 2201, 2380, 2414, 2485, 2604, 2635, 2840, 2856, 2982, 3162, 3255, 3570, 3621, 3689, 3720, 3976, 4216, 4260, 4340, 4402, 4760, 4828, 4970, 5208, 5270, 5964, 6035, 6324, 6510, 6603, 7140, 7242, 7378, 7455, 7905, 8449, 8520, 8680, 8804, 9656, 9940, 10540, 11005, 11067, 11928, 12070, 12648, 13020, 13206, 14280, 14484, 14756, 14910, 15407, 15810, 16898, 17608, 18105, 18445, 19880, 21080, 22010, 22134, 24140, 25347, 26040, 26412, 28968, 29512, 29820, 30814, 31620, 33015, 33796, 36210, 36890, 37417, 42245, 44020, 44268, 46221, 48280, 50694, 52824, 55335, 59640, 61628, 63240, 66030, 67592, 72420, 73780, 74834, 77035, 84490, 88040, 88536, 92442, 101388, 110670, 112251, 123256, 126735, 132060, 144840, 147560, 149668, 154070, 168980, 184884, 187085, 202776, 221340, 224502, 231105, 253470, 261919, 264120, 299336, 308140, 337960, 369768, 374170, 442680, 449004, 462210, 506940, 523838, 561255, 616280, 748340, 785757, 898008, 924420, 1013880, 1047676, 1122510, 1309595, 1496680, 1571514, 1848840, 2095352, 2245020, 2619190, 3143028, 3928785, 4490040, 5238380, 6286056, 7857570, 10476760, 15715140, 31430280]

約数ペア:

[(1, 31430280), (2, 15715140), (3, 10476760), (4, 7857570), (5, 6286056), (6, 5238380), (7, 4490040), (8, 3928785), (10, 3143028), (12, 2619190), (14, 2245020), (15, 2095352), (17, 1848840), (20, 1571514), (21, 1496680), (24, 1309595), (28, 1122510), (30, 1047676), (31, 1013880), (34, 924420), (35, 898008), (40, 785757), (42, 748340), (51, 616280), (56, 561255), (60, 523838), (62, 506940), (68, 462210), (70, 449004), (71, 442680), (84, 374170), (85, 369768), (93, 337960), (102, 308140), (105, 299336), (119, 264120), (120, 261919), (124, 253470), (136, 231105), (140, 224502), (142, 221340), (155, 202776), (168, 187085), (170, 184884), (186, 168980), (204, 154070), (210, 149668), (213, 147560), (217, 144840), (238, 132060), (248, 126735), (255, 123256), (280, 112251), (284, 110670), (310, 101388), (340, 92442), (355, 88536), (357, 88040), (372, 84490), (408, 77035), (420, 74834), (426, 73780), (434, 72420), (465, 67592), (476, 66030), (497, 63240), (510, 61628), (527, 59640), (568, 55335), (595, 52824), (620, 50694), (651, 48280), (680, 46221), (710, 44268), (714, 44020), (744, 42245), (840, 37417), (852, 36890), (868, 36210), (930, 33796), (952, 33015), (994, 31620), (1020, 30814), (1054, 29820), (1065, 29512), (1085, 28968), (1190, 26412), (1207, 26040), (1240, 25347), (1302, 24140), (1420, 22134), (1428, 22010), (1491, 21080), (1581, 19880), (1704, 18445), (1736, 18105), (1785, 17608), (1860, 16898), (1988, 15810), (2040, 15407), (2108, 14910), (2130, 14756), (2170, 14484), (2201, 14280), (2380, 13206), (2414, 13020), (2485, 12648), (2604, 12070), (2635, 11928), (2840, 11067), (2856, 11005), (2982, 10540), (3162, 9940), (3255, 9656), (3570, 8804), (3621, 8680), (3689, 8520), (3720, 8449), (3976, 7905), (4216, 7455), (4260, 7378), (4340, 7242), (4402, 7140), (4760, 6603), (4828, 6510), (4970, 6324), (5208, 6035), (5270, 5964)]