20570475

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3863}}^1$

素因数の和:3947

約数の個数: 24

約数和(自身を含む): 34497792

約数和(自身を除く): 13927317

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3863, 5325, 11589, 19315, 57945, 96575, 274273, 289725, 822819, 1371365, 4114095, 6856825, 20570475]

約数ペア:

[(1, 20570475), (3, 6856825), (5, 4114095), (15, 1371365), (25, 822819), (71, 289725), (75, 274273), (213, 96575), (355, 57945), (1065, 19315), (1775, 11589), (3863, 5325)]