21761571

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 11139549

約数列:

[1, 3, 13, 29, 39, 71, 87, 213, 271, 377, 813, 923, 1131, 2059, 2769, 3523, 6177, 7859, 10569, 19241, 23577, 26767, 57723, 80301, 102167, 250133, 306501, 557989, 750399, 1673967, 7253857, 21761571]

約数ペア:

[(1, 21761571), (3, 7253857), (13, 1673967), (29, 750399), (39, 557989), (71, 306501), (87, 250133), (213, 102167), (271, 80301), (377, 57723), (813, 26767), (923, 23577), (1131, 19241), (2059, 10569), (2769, 7859), (3523, 6177)]