637520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{613}}^1$

素因数の和:639

約数の個数: 40

約数和(自身を含む): 1598856

約数和(自身を除く): 961336

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 613, 1040, 1226, 2452, 3065, 4904, 6130, 7969, 9808, 12260, 15938, 24520, 31876, 39845, 49040, 63752, 79690, 127504, 159380, 318760, 637520]

約数ペア:

[(1, 637520), (2, 318760), (4, 159380), (5, 127504), (8, 79690), (10, 63752), (13, 49040), (16, 39845), (20, 31876), (26, 24520), (40, 15938), (52, 12260), (65, 9808), (80, 7969), (104, 6130), (130, 4904), (208, 3065), (260, 2452), (520, 1226), (613, 1040)]