128210680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{3121}}^1$

素因数の和:3224

約数の個数: 64

約数和(自身を含む): 314697600

約数和(自身を除く): 186486920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 520, 632, 790, 1027, 1580, 2054, 3121, 3160, 4108, 5135, 6242, 8216, 10270, 12484, 15605, 20540, 24968, 31210, 40573, 41080, 62420, 81146, 124840, 162292, 202865, 246559, 324584, 405730, 493118, 811460, 986236, 1232795, 1622920, 1972472, 2465590, 3205267, 4931180, 6410534, 9862360, 12821068, 16026335, 25642136, 32052670, 64105340, 128210680]

約数ペア:

[(1, 128210680), (2, 64105340), (4, 32052670), (5, 25642136), (8, 16026335), (10, 12821068), (13, 9862360), (20, 6410534), (26, 4931180), (40, 3205267), (52, 2465590), (65, 1972472), (79, 1622920), (104, 1232795), (130, 986236), (158, 811460), (260, 493118), (316, 405730), (395, 324584), (520, 246559), (632, 202865), (790, 162292), (1027, 124840), (1580, 81146), (2054, 62420), (3121, 41080), (3160, 40573), (4108, 31210), (5135, 24968), (6242, 20540), (8216, 15605), (10270, 12484)]