21551696

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43451}}^1$

素因数の和:43490

約数の個数: 20

約数和(自身を含む): 43104384

約数和(自身を除く): 21552688

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43451, 86902, 173804, 347608, 695216, 1346981, 2693962, 5387924, 10775848, 21551696]

約数ペア:

[(1, 21551696), (2, 10775848), (4, 5387924), (8, 2693962), (16, 1346981), (31, 695216), (62, 347608), (124, 173804), (248, 86902), (496, 43451)]