28204100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{3169}}^1$

素因数の和:3272

約数の個数: 36

約数和(自身を含む): 61910100

約数和(自身を除く): 33706000

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 3169, 4450, 6338, 8900, 12676, 15845, 31690, 63380, 79225, 158450, 282041, 316900, 564082, 1128164, 1410205, 2820410, 5640820, 7051025, 14102050, 28204100]

約数ペア:

[(1, 28204100), (2, 14102050), (4, 7051025), (5, 5640820), (10, 2820410), (20, 1410205), (25, 1128164), (50, 564082), (89, 316900), (100, 282041), (178, 158450), (356, 79225), (445, 63380), (890, 31690), (1780, 15845), (2225, 12676), (3169, 8900), (4450, 6338)]