681460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2621}}^1$

素因数の和:2643

約数の個数: 24

約数和(自身を含む): 1541736

約数和(自身を除く): 860276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2621, 5242, 10484, 13105, 26210, 34073, 52420, 68146, 136292, 170365, 340730, 681460]

約数ペア:

[(1, 681460), (2, 340730), (4, 170365), (5, 136292), (10, 68146), (13, 52420), (20, 34073), (26, 26210), (52, 13105), (65, 10484), (130, 5242), (260, 2621)]