661700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:536

約数の個数: 36

約数和(自身を含む): 1549380

約数和(自身を除く): 887680

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 509, 650, 1018, 1300, 2036, 2545, 5090, 6617, 10180, 12725, 13234, 25450, 26468, 33085, 50900, 66170, 132340, 165425, 330850, 661700]

約数ペア:

[(1, 661700), (2, 330850), (4, 165425), (5, 132340), (10, 66170), (13, 50900), (20, 33085), (25, 26468), (26, 25450), (50, 13234), (52, 12725), (65, 10180), (100, 6617), (130, 5090), (260, 2545), (325, 2036), (509, 1300), (650, 1018)]