21681028

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{3299}}^1$

素因数の和:3387

約数の個数: 24

約数和(自身を含む): 39916800

約数和(自身を除く): 18235772

約数列:

[1, 2, 4, 31, 53, 62, 106, 124, 212, 1643, 3286, 3299, 6572, 6598, 13196, 102269, 174847, 204538, 349694, 409076, 699388, 5420257, 10840514, 21681028]

約数ペア:

[(1, 21681028), (2, 10840514), (4, 5420257), (31, 699388), (53, 409076), (62, 349694), (106, 204538), (124, 174847), (212, 102269), (1643, 13196), (3286, 6598), (3299, 6572)]