21770588

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 45287424

約数和(自身を除く): 23516836

約数列:

[1, 2, 4, 7, 14, 28, 47, 71, 94, 142, 188, 233, 284, 329, 466, 497, 658, 932, 994, 1316, 1631, 1988, 3262, 3337, 6524, 6674, 10951, 13348, 16543, 21902, 23359, 33086, 43804, 46718, 66172, 76657, 93436, 115801, 153314, 231602, 306628, 463204, 777521, 1555042, 3110084, 5442647, 10885294, 21770588]

約数ペア:

[(1, 21770588), (2, 10885294), (4, 5442647), (7, 3110084), (14, 1555042), (28, 777521), (47, 463204), (71, 306628), (94, 231602), (142, 153314), (188, 115801), (233, 93436), (284, 76657), (329, 66172), (466, 46718), (497, 43804), (658, 33086), (932, 23359), (994, 21902), (1316, 16543), (1631, 13348), (1988, 10951), (3262, 6674), (3337, 6524)]