21270837

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{937}}^1$

素因数の和:1017

約数の個数: 32

約数和(自身を含む): 34578432

約数和(自身を除く): 13307595

約数列:

[1, 3, 7, 21, 23, 47, 69, 141, 161, 329, 483, 937, 987, 1081, 2811, 3243, 6559, 7567, 19677, 21551, 22701, 44039, 64653, 132117, 150857, 308273, 452571, 924819, 1012897, 3038691, 7090279, 21270837]

約数ペア:

[(1, 21270837), (3, 7090279), (7, 3038691), (21, 1012897), (23, 924819), (47, 452571), (69, 308273), (141, 150857), (161, 132117), (329, 64653), (483, 44039), (937, 22701), (987, 21551), (1081, 19677), (2811, 7567), (3243, 6559)]