20045750

素因数分解:

$2^1\times 5^3\times {\mathrm{181}}^1\times {\mathrm{443}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 37818144

約数和(自身を除く): 17772394

約数列:

[1, 2, 5, 10, 25, 50, 125, 181, 250, 362, 443, 886, 905, 1810, 2215, 4430, 4525, 9050, 11075, 22150, 22625, 45250, 55375, 80183, 110750, 160366, 400915, 801830, 2004575, 4009150, 10022875, 20045750]

約数ペア:

[(1, 20045750), (2, 10022875), (5, 4009150), (10, 2004575), (25, 801830), (50, 400915), (125, 160366), (181, 110750), (250, 80183), (362, 55375), (443, 45250), (886, 22625), (905, 22150), (1810, 11075), (2215, 9050), (4430, 4525)]