25391980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{66821}}^1$

素因数の和:66849

約数の個数: 24

約数和(自身を含む): 56130480

約数和(自身を除く): 30738500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 66821, 133642, 267284, 334105, 668210, 1269599, 1336420, 2539198, 5078396, 6347995, 12695990, 25391980]

約数ペア:

[(1, 25391980), (2, 12695990), (4, 6347995), (5, 5078396), (10, 2539198), (19, 1336420), (20, 1269599), (38, 668210), (76, 334105), (95, 267284), (190, 133642), (380, 66821)]