21686458

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 36142848

約数和(自身を除く): 14456390

約数列:

[1, 2, 17, 34, 41, 47, 82, 94, 331, 662, 697, 799, 1394, 1598, 1927, 3854, 5627, 11254, 13571, 15557, 27142, 31114, 32759, 65518, 230707, 264469, 461414, 528938, 637837, 1275674, 10843229, 21686458]

約数ペア:

[(1, 21686458), (2, 10843229), (17, 1275674), (34, 637837), (41, 528938), (47, 461414), (82, 264469), (94, 230707), (331, 65518), (662, 32759), (697, 31114), (799, 27142), (1394, 15557), (1598, 13571), (1927, 11254), (3854, 5627)]