64843960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2081}}^1$

素因数の和:2152

約数の個数: 64

約数和(自身を含む): 157399200

約数和(自身を除く): 92555240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 760, 779, 820, 1558, 1640, 2081, 3116, 3895, 4162, 6232, 7790, 8324, 10405, 15580, 16648, 20810, 31160, 39539, 41620, 79078, 83240, 85321, 158156, 170642, 197695, 316312, 341284, 395390, 426605, 682568, 790780, 853210, 1581560, 1621099, 1706420, 3242198, 3412840, 6484396, 8105495, 12968792, 16210990, 32421980, 64843960]

約数ペア:

[(1, 64843960), (2, 32421980), (4, 16210990), (5, 12968792), (8, 8105495), (10, 6484396), (19, 3412840), (20, 3242198), (38, 1706420), (40, 1621099), (41, 1581560), (76, 853210), (82, 790780), (95, 682568), (152, 426605), (164, 395390), (190, 341284), (205, 316312), (328, 197695), (380, 170642), (410, 158156), (760, 85321), (779, 83240), (820, 79078), (1558, 41620), (1640, 39539), (2081, 31160), (3116, 20810), (3895, 16648), (4162, 15580), (6232, 10405), (7790, 8324)]