9880240

素因数分解:

$2^4\times 5^1\times {\mathrm{123503}}^1$

素因数の和:123516

約数の個数: 20

約数和(自身を含む): 22971744

約数和(自身を除く): 13091504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 123503, 247006, 494012, 617515, 988024, 1235030, 1976048, 2470060, 4940120, 9880240]

約数ペア:

[(1, 9880240), (2, 4940120), (4, 2470060), (5, 1976048), (8, 1235030), (10, 988024), (16, 617515), (20, 494012), (40, 247006), (80, 123503)]