21500510

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{359}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 39890880

約数和(自身を除く): 18390370

約数列:

[1, 2, 5, 10, 53, 106, 113, 226, 265, 359, 530, 565, 718, 1130, 1795, 3590, 5989, 11978, 19027, 29945, 38054, 40567, 59890, 81134, 95135, 190270, 202835, 405670, 2150051, 4300102, 10750255, 21500510]

約数ペア:

[(1, 21500510), (2, 10750255), (5, 4300102), (10, 2150051), (53, 405670), (106, 202835), (113, 190270), (226, 95135), (265, 81134), (359, 59890), (530, 40567), (565, 38054), (718, 29945), (1130, 19027), (1795, 11978), (3590, 5989)]