21257314

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1163}}^1$

素因数の和:1234

約数の個数: 32

約数和(自身を含む): 37154880

約数和(自身を除く): 15897566

約数列:

[1, 2, 13, 19, 26, 37, 38, 74, 247, 481, 494, 703, 962, 1163, 1406, 2326, 9139, 15119, 18278, 22097, 30238, 43031, 44194, 86062, 287261, 559403, 574522, 817589, 1118806, 1635178, 10628657, 21257314]

約数ペア:

[(1, 21257314), (2, 10628657), (13, 1635178), (19, 1118806), (26, 817589), (37, 574522), (38, 559403), (74, 287261), (247, 86062), (481, 44194), (494, 43031), (703, 30238), (962, 22097), (1163, 18278), (1406, 15119), (2326, 9139)]