21212290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2441}}^1$

素因数の和:2538

約数の個数: 32

約数和(自身を含む): 42197760

約数和(自身を除く): 20985470

約数列:

[1, 2, 5, 10, 11, 22, 55, 79, 110, 158, 395, 790, 869, 1738, 2441, 4345, 4882, 8690, 12205, 24410, 26851, 53702, 134255, 192839, 268510, 385678, 964195, 1928390, 2121229, 4242458, 10606145, 21212290]

約数ペア:

[(1, 21212290), (2, 10606145), (5, 4242458), (10, 2121229), (11, 1928390), (22, 964195), (55, 385678), (79, 268510), (110, 192839), (158, 134255), (395, 53702), (790, 26851), (869, 24410), (1738, 12205), (2441, 8690), (4345, 4882)]