20697215

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53759}}^1$

素因数の和:53782

約数の個数: 16

約数和(自身を含む): 30965760

約数和(自身を除く): 10268545

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 53759, 268795, 376313, 591349, 1881565, 2956745, 4139443, 20697215]

約数ペア:

[(1, 20697215), (5, 4139443), (7, 2956745), (11, 1881565), (35, 591349), (55, 376313), (77, 268795), (385, 53759)]