80700920

素因数分解:

$2^3\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{1787}}^1$

素因数の和:2927

約数の個数: 32

約数和(自身を含む): 181839600

約数和(自身を除く): 101138680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1129, 1787, 2258, 3574, 4516, 5645, 7148, 8935, 9032, 11290, 14296, 17870, 22580, 35740, 45160, 71480, 2017523, 4035046, 8070092, 10087615, 16140184, 20175230, 40350460, 80700920]

約数ペア:

[(1, 80700920), (2, 40350460), (4, 20175230), (5, 16140184), (8, 10087615), (10, 8070092), (20, 4035046), (40, 2017523), (1129, 71480), (1787, 45160), (2258, 35740), (3574, 22580), (4516, 17870), (5645, 14296), (7148, 11290), (8935, 9032)]