21266992

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:901

約数の個数: 40

約数和(自身を含む): 43390080

約数和(自身を除く): 22123088

約数列:

[1, 2, 4, 8, 16, 31, 53, 62, 106, 124, 212, 248, 424, 496, 809, 848, 1618, 1643, 3236, 3286, 6472, 6572, 12944, 13144, 25079, 26288, 42877, 50158, 85754, 100316, 171508, 200632, 343016, 401264, 686032, 1329187, 2658374, 5316748, 10633496, 21266992]

約数ペア:

[(1, 21266992), (2, 10633496), (4, 5316748), (8, 2658374), (16, 1329187), (31, 686032), (53, 401264), (62, 343016), (106, 200632), (124, 171508), (212, 100316), (248, 85754), (424, 50158), (496, 42877), (809, 26288), (848, 25079), (1618, 13144), (1643, 12944), (3236, 6572), (3286, 6472)]