21283420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56009}}^1$

素因数の和:56037

約数の個数: 24

約数和(自身を含む): 47048400

約数和(自身を除く): 25764980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56009, 112018, 224036, 280045, 560090, 1064171, 1120180, 2128342, 4256684, 5320855, 10641710, 21283420]

約数ペア:

[(1, 21283420), (2, 10641710), (4, 5320855), (5, 4256684), (10, 2128342), (19, 1120180), (20, 1064171), (38, 560090), (76, 280045), (95, 224036), (190, 112018), (380, 56009)]