79901980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56269}}^1$

素因数の和:56349

約数の個数: 24

約数和(自身を含む): 170160480

約数和(自身を除く): 90258500

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 56269, 112538, 225076, 281345, 562690, 1125380, 3995099, 7990198, 15980396, 19975495, 39950990, 79901980]

約数ペア:

[(1, 79901980), (2, 39950990), (4, 19975495), (5, 15980396), (10, 7990198), (20, 3995099), (71, 1125380), (142, 562690), (284, 281345), (355, 225076), (710, 112538), (1420, 56269)]