21415947

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:599

約数の個数: 32

約数和(自身を含む): 34258944

約数和(自身を除く): 12842997

約数列:

[1, 3, 7, 21, 31, 67, 93, 201, 217, 469, 491, 651, 1407, 1473, 2077, 3437, 6231, 10311, 14539, 15221, 32897, 43617, 45663, 98691, 106547, 230279, 319641, 690837, 1019807, 3059421, 7138649, 21415947]

約数ペア:

[(1, 21415947), (3, 7138649), (7, 3059421), (21, 1019807), (31, 690837), (67, 319641), (93, 230279), (201, 106547), (217, 98691), (469, 45663), (491, 43617), (651, 32897), (1407, 15221), (1473, 14539), (2077, 10311), (3437, 6231)]