621721340

素因数分解:

$2^2\times 5^1\times {\mathrm{2309}}^1\times {\mathrm{13463}}^1$

素因数の和:15781

約数の個数: 24

約数和(自身を含む): 1306277280

約数和(自身を除く): 684555940

約数列:

[1, 2, 4, 5, 10, 20, 2309, 4618, 9236, 11545, 13463, 23090, 26926, 46180, 53852, 67315, 134630, 269260, 31086067, 62172134, 124344268, 155430335, 310860670, 621721340]

約数ペア:

[(1, 621721340), (2, 310860670), (4, 155430335), (5, 124344268), (10, 62172134), (20, 31086067), (2309, 269260), (4618, 134630), (9236, 67315), (11545, 53852), (13463, 46180), (23090, 26926)]