21451265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{4937}}^1$

素因数の和:5032

約数の個数: 16

約数和(自身を含む): 28442880

約数和(自身を除く): 6991615

約数列:

[1, 5, 11, 55, 79, 395, 869, 4345, 4937, 24685, 54307, 271535, 390023, 1950115, 4290253, 21451265]

約数ペア:

[(1, 21451265), (5, 4290253), (11, 1950115), (55, 390023), (79, 271535), (395, 54307), (869, 24685), (4345, 4937)]