639696538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{4507}}^1$

素因数の和:4678

約数の個数: 32

約数和(自身を含む): 1063310976

約数和(自身を除く): 423614438

約数列:

[1, 2, 13, 26, 53, 103, 106, 206, 689, 1339, 1378, 2678, 4507, 5459, 9014, 10918, 58591, 70967, 117182, 141934, 238871, 464221, 477742, 928442, 3105323, 6034873, 6210646, 12069746, 24603713, 49207426, 319848269, 639696538]

約数ペア:

[(1, 639696538), (2, 319848269), (13, 49207426), (26, 24603713), (53, 12069746), (103, 6210646), (106, 6034873), (206, 3105323), (689, 928442), (1339, 477742), (1378, 464221), (2678, 238871), (4507, 141934), (5459, 117182), (9014, 70967), (10918, 58591)]