20515450

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5779}}^1$

素因数の和:5862

約数の個数: 24

約数和(自身を含む): 38702880

約数和(自身を除く): 18187430

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 5779, 11558, 28895, 57790, 144475, 288950, 410309, 820618, 2051545, 4103090, 10257725, 20515450]

約数ペア:

[(1, 20515450), (2, 10257725), (5, 4103090), (10, 2051545), (25, 820618), (50, 410309), (71, 288950), (142, 144475), (355, 57790), (710, 28895), (1775, 11558), (3550, 5779)]