20401900

素因数分解:

$2^2\times 5^2\times {\mathrm{204019}}^1$

素因数の和:204033

約数の個数: 18

約数和(自身を含む): 44272340

約数和(自身を除く): 23870440

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 204019, 408038, 816076, 1020095, 2040190, 4080380, 5100475, 10200950, 20401900]

約数ペア:

[(1, 20401900), (2, 10200950), (4, 5100475), (5, 4080380), (10, 2040190), (20, 1020095), (25, 816076), (50, 408038), (100, 204019)]