85718480

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1621}}^1$

素因数の和:2295

約数の個数: 40

約数和(自身を含む): 199720104

約数和(自身を除く): 114001624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 1322, 1621, 2644, 3242, 3305, 5288, 6484, 6610, 8105, 10576, 12968, 13220, 16210, 25936, 26440, 32420, 52880, 64840, 129680, 1071481, 2142962, 4285924, 5357405, 8571848, 10714810, 17143696, 21429620, 42859240, 85718480]

約数ペア:

[(1, 85718480), (2, 42859240), (4, 21429620), (5, 17143696), (8, 10714810), (10, 8571848), (16, 5357405), (20, 4285924), (40, 2142962), (80, 1071481), (661, 129680), (1322, 64840), (1621, 52880), (2644, 32420), (3242, 26440), (3305, 25936), (5288, 16210), (6484, 13220), (6610, 12968), (8105, 10576)]