643120670

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 1217414016

約数和(自身を除く): 574293346

約数列:

[1, 2, 5, 10, 41, 82, 97, 103, 157, 194, 205, 206, 314, 410, 485, 515, 785, 970, 1030, 1570, 3977, 4223, 6437, 7954, 8446, 9991, 12874, 15229, 16171, 19885, 19982, 21115, 30458, 32185, 32342, 39770, 42230, 49955, 64370, 76145, 80855, 99910, 152290, 161710, 409631, 624389, 663011, 819262, 1248778, 1326022, 1568587, 2048155, 3121945, 3137174, 3315055, 4096310, 6243890, 6630110, 7842935, 15685870, 64312067, 128624134, 321560335, 643120670]

約数ペア:

[(1, 643120670), (2, 321560335), (5, 128624134), (10, 64312067), (41, 15685870), (82, 7842935), (97, 6630110), (103, 6243890), (157, 4096310), (194, 3315055), (205, 3137174), (206, 3121945), (314, 2048155), (410, 1568587), (485, 1326022), (515, 1248778), (785, 819262), (970, 663011), (1030, 624389), (1570, 409631), (3977, 161710), (4223, 152290), (6437, 99910), (7954, 80855), (8446, 76145), (9991, 64370), (12874, 49955), (15229, 42230), (16171, 39770), (19885, 32342), (19982, 32185), (21115, 30458)]