9967640

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1181}}^1$

素因数の和:1403

約数の個数: 32

約数和(自身を含む): 22552560

約数和(自身を除く): 12584920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1181, 1688, 2110, 2362, 4220, 4724, 5905, 8440, 9448, 11810, 23620, 47240, 249191, 498382, 996764, 1245955, 1993528, 2491910, 4983820, 9967640]

約数ペア:

[(1, 9967640), (2, 4983820), (4, 2491910), (5, 1993528), (8, 1245955), (10, 996764), (20, 498382), (40, 249191), (211, 47240), (422, 23620), (844, 11810), (1055, 9448), (1181, 8440), (1688, 5905), (2110, 4724), (2362, 4220)]