21678411

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{541}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 31388304

約数和(自身を除く): 9709893

約数列:

[1, 3, 19, 37, 57, 111, 361, 541, 703, 1083, 1623, 2109, 10279, 13357, 20017, 30837, 40071, 60051, 195301, 380323, 585903, 1140969, 7226137, 21678411]

約数ペア:

[(1, 21678411), (3, 7226137), (19, 1140969), (37, 585903), (57, 380323), (111, 195301), (361, 60051), (541, 40071), (703, 30837), (1083, 20017), (1623, 13357), (2109, 10279)]