21915155

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{359}}^1\times {\mathrm{421}}^1$

素因数の和:814

約数の個数: 16

約数和(自身を含む): 27345600

約数和(自身を除く): 5430445

約数列:

[1, 5, 29, 145, 359, 421, 1795, 2105, 10411, 12209, 52055, 61045, 151139, 755695, 4383031, 21915155]

約数ペア:

[(1, 21915155), (5, 4383031), (29, 755695), (145, 151139), (359, 61045), (421, 52055), (1795, 12209), (2105, 10411)]