21052772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4549}}^1$

素因数の和:4655

約数の個数: 24

約数和(自身を含む): 40131000

約数和(自身を除く): 19078228

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4549, 4628, 9098, 18196, 59137, 118274, 236548, 404861, 809722, 1619444, 5263193, 10526386, 21052772]

約数ペア:

[(1, 21052772), (2, 10526386), (4, 5263193), (13, 1619444), (26, 809722), (52, 404861), (89, 236548), (178, 118274), (356, 59137), (1157, 18196), (2314, 9098), (4549, 4628)]