21379420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{46477}}^1$

素因数の和:46509

約数の個数: 24

約数和(自身を含む): 46849824

約数和(自身を除く): 25470404

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 46477, 92954, 185908, 232385, 464770, 929540, 1068971, 2137942, 4275884, 5344855, 10689710, 21379420]

約数ペア:

[(1, 21379420), (2, 10689710), (4, 5344855), (5, 4275884), (10, 2137942), (20, 1068971), (23, 929540), (46, 464770), (92, 232385), (115, 185908), (230, 92954), (460, 46477)]