21898010

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 40746240

約数和(自身を除く): 18848230

約数列:

[1, 2, 5, 10, 53, 79, 106, 158, 265, 395, 523, 530, 790, 1046, 2615, 4187, 5230, 8374, 20935, 27719, 41317, 41870, 55438, 82634, 138595, 206585, 277190, 413170, 2189801, 4379602, 10949005, 21898010]

約数ペア:

[(1, 21898010), (2, 10949005), (5, 4379602), (10, 2189801), (53, 413170), (79, 277190), (106, 206585), (158, 138595), (265, 82634), (395, 55438), (523, 41870), (530, 41317), (790, 27719), (1046, 20935), (2615, 8374), (4187, 5230)]