21931972

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 21734588

約数列:

[1, 2, 4, 17, 23, 34, 37, 46, 68, 74, 92, 148, 379, 391, 629, 758, 782, 851, 1258, 1516, 1564, 1702, 2516, 3404, 6443, 8717, 12886, 14023, 14467, 17434, 25772, 28046, 28934, 34868, 56092, 57868, 148189, 238391, 296378, 322529, 476782, 592756, 645058, 953564, 1290116, 5482993, 10965986, 21931972]

約数ペア:

[(1, 21931972), (2, 10965986), (4, 5482993), (17, 1290116), (23, 953564), (34, 645058), (37, 592756), (46, 476782), (68, 322529), (74, 296378), (92, 238391), (148, 148189), (379, 57868), (391, 56092), (629, 34868), (758, 28934), (782, 28046), (851, 25772), (1258, 17434), (1516, 14467), (1564, 14023), (1702, 12886), (2516, 8717), (3404, 6443)]