61720840

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{5867}}^1$

素因数の和:6141

約数の個数: 32

約数和(自身を含む): 139423680

約数和(自身を除く): 77702840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 5867, 10520, 11734, 23468, 29335, 46936, 58670, 117340, 234680, 1543021, 3086042, 6172084, 7715105, 12344168, 15430210, 30860420, 61720840]

約数ペア:

[(1, 61720840), (2, 30860420), (4, 15430210), (5, 12344168), (8, 7715105), (10, 6172084), (20, 3086042), (40, 1543021), (263, 234680), (526, 117340), (1052, 58670), (1315, 46936), (2104, 29335), (2630, 23468), (5260, 11734), (5867, 10520)]