660140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2539}}^1$

素因数の和:2561

約数の個数: 24

約数和(自身を含む): 1493520

約数和(自身を除く): 833380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2539, 5078, 10156, 12695, 25390, 33007, 50780, 66014, 132028, 165035, 330070, 660140]

約数ペア:

[(1, 660140), (2, 330070), (4, 165035), (5, 132028), (10, 66014), (13, 50780), (20, 33007), (26, 25390), (52, 12695), (65, 10156), (130, 5078), (260, 2539)]