21054628

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20323}}^1$

素因数の和:20371

約数の個数: 24

約数和(自身を含む): 43249472

約数和(自身を除く): 22194844

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20323, 40646, 81292, 142261, 284522, 569044, 751951, 1503902, 3007804, 5263657, 10527314, 21054628]

約数ペア:

[(1, 21054628), (2, 10527314), (4, 5263657), (7, 3007804), (14, 1503902), (28, 751951), (37, 569044), (74, 284522), (148, 142261), (259, 81292), (518, 40646), (1036, 20323)]