71719120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:305

約数の個数: 120

約数和(自身を含む): 189987840

約数和(自身を除く): 118268720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 121, 124, 155, 176, 220, 239, 242, 248, 310, 341, 440, 478, 484, 496, 605, 620, 682, 880, 956, 968, 1195, 1210, 1240, 1364, 1705, 1912, 1936, 2390, 2420, 2480, 2629, 2728, 3410, 3751, 3824, 4780, 4840, 5258, 5456, 6820, 7409, 7502, 9560, 9680, 10516, 13145, 13640, 14818, 15004, 18755, 19120, 21032, 26290, 27280, 28919, 29636, 30008, 37045, 37510, 42064, 52580, 57838, 59272, 60016, 74090, 75020, 81499, 105160, 115676, 118544, 144595, 148180, 150040, 162998, 210320, 231352, 289190, 296360, 300080, 325996, 407495, 462704, 578380, 592720, 651992, 814990, 896489, 1156760, 1303984, 1629980, 1792978, 2313520, 3259960, 3585956, 4482445, 6519920, 7171912, 8964890, 14343824, 17929780, 35859560, 71719120]

約数ペア:

[(1, 71719120), (2, 35859560), (4, 17929780), (5, 14343824), (8, 8964890), (10, 7171912), (11, 6519920), (16, 4482445), (20, 3585956), (22, 3259960), (31, 2313520), (40, 1792978), (44, 1629980), (55, 1303984), (62, 1156760), (80, 896489), (88, 814990), (110, 651992), (121, 592720), (124, 578380), (155, 462704), (176, 407495), (220, 325996), (239, 300080), (242, 296360), (248, 289190), (310, 231352), (341, 210320), (440, 162998), (478, 150040), (484, 148180), (496, 144595), (605, 118544), (620, 115676), (682, 105160), (880, 81499), (956, 75020), (968, 74090), (1195, 60016), (1210, 59272), (1240, 57838), (1364, 52580), (1705, 42064), (1912, 37510), (1936, 37045), (2390, 30008), (2420, 29636), (2480, 28919), (2629, 27280), (2728, 26290), (3410, 21032), (3751, 19120), (3824, 18755), (4780, 15004), (4840, 14818), (5258, 13640), (5456, 13145), (6820, 10516), (7409, 9680), (7502, 9560)]