20510050

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 21674750

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 89, 110, 178, 275, 419, 445, 550, 838, 890, 979, 1958, 2095, 2225, 4190, 4450, 4609, 4895, 9218, 9790, 10475, 20950, 23045, 24475, 37291, 46090, 48950, 74582, 115225, 186455, 230450, 372910, 410201, 820402, 932275, 1864550, 2051005, 4102010, 10255025, 20510050]

約数ペア:

[(1, 20510050), (2, 10255025), (5, 4102010), (10, 2051005), (11, 1864550), (22, 932275), (25, 820402), (50, 410201), (55, 372910), (89, 230450), (110, 186455), (178, 115225), (275, 74582), (419, 48950), (445, 46090), (550, 37291), (838, 24475), (890, 23045), (979, 20950), (1958, 10475), (2095, 9790), (2225, 9218), (4190, 4895), (4450, 4609)]