20504788

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{911}}^1$

素因数の和:1263

約数の個数: 24

約数和(自身を含む): 38150784

約数和(自身を除く): 17645996

約数列:

[1, 2, 4, 17, 34, 68, 331, 662, 911, 1324, 1822, 3644, 5627, 11254, 15487, 22508, 30974, 61948, 301541, 603082, 1206164, 5126197, 10252394, 20504788]

約数ペア:

[(1, 20504788), (2, 10252394), (4, 5126197), (17, 1206164), (34, 603082), (68, 301541), (331, 61948), (662, 30974), (911, 22508), (1324, 15487), (1822, 11254), (3644, 5627)]