18404140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{40009}}^1$

素因数の和:40041

約数の個数: 24

約数和(自身を含む): 40330080

約数和(自身を除く): 21925940

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 40009, 80018, 160036, 200045, 400090, 800180, 920207, 1840414, 3680828, 4601035, 9202070, 18404140]

約数ペア:

[(1, 18404140), (2, 9202070), (4, 4601035), (5, 3680828), (10, 1840414), (20, 920207), (23, 800180), (46, 400090), (92, 200045), (115, 160036), (230, 80018), (460, 40009)]