21000470450

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{1801}}^1\times {\mathrm{2309}}^1$

素因数の和:4223

約数の個数: 48

約数和(自身を含む): 39486613320

約数和(自身を除く): 18486142870

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 1801, 2309, 2525, 3602, 4618, 5050, 9005, 11545, 18010, 23090, 45025, 57725, 90050, 115450, 181901, 233209, 363802, 466418, 909505, 1166045, 1819010, 2332090, 4158509, 4547525, 5830225, 8317018, 9095050, 11660450, 20792545, 41585090, 103962725, 207925450, 420009409, 840018818, 2100047045, 4200094090, 10500235225, 21000470450]

約数ペア:

[(1, 21000470450), (2, 10500235225), (5, 4200094090), (10, 2100047045), (25, 840018818), (50, 420009409), (101, 207925450), (202, 103962725), (505, 41585090), (1010, 20792545), (1801, 11660450), (2309, 9095050), (2525, 8317018), (3602, 5830225), (4618, 4547525), (5050, 4158509), (9005, 2332090), (11545, 1819010), (18010, 1166045), (23090, 909505), (45025, 466418), (57725, 363802), (90050, 233209), (115450, 181901)]