21000888050

素因数分解:

$2^1\times 5^2\times {\mathrm{31721}}^1\times {\mathrm{13241}}^1$

素因数の和:44974

約数の個数: 24

約数和(自身を含む): 39065833332

約数和(自身を除く): 18064945282

約数列:

[1, 2, 5, 10, 25, 50, 13241, 26482, 31721, 63442, 66205, 132410, 158605, 317210, 331025, 662050, 793025, 1586050, 420017761, 840035522, 2100088805, 4200177610, 10500444025, 21000888050]

約数ペア:

[(1, 21000888050), (2, 10500444025), (5, 4200177610), (10, 2100088805), (25, 840035522), (50, 420017761), (13241, 1586050), (26482, 793025), (31721, 662050), (63442, 331025), (66205, 317210), (132410, 158605)]