21301445

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 28411992

約数和(自身を除く): 7110547

約数列:

[1, 5, 11, 55, 121, 137, 257, 605, 685, 1285, 1507, 2827, 7535, 14135, 16577, 31097, 35209, 82885, 155485, 176045, 387299, 1936495, 4260289, 21301445]

約数ペア:

[(1, 21301445), (5, 4260289), (11, 1936495), (55, 387299), (121, 176045), (137, 155485), (257, 82885), (605, 35209), (685, 31097), (1285, 16577), (1507, 14135), (2827, 7535)]