21000332170

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67743007}}^1$

素因数の和:67743045

約数の個数: 16

約数和(自身を含む): 39019972608

約数和(自身を除く): 18019640438

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 67743007, 135486014, 338715035, 677430070, 2100033217, 4200066434, 10500166085, 21000332170]

約数ペア:

[(1, 21000332170), (2, 10500166085), (5, 4200066434), (10, 2100033217), (31, 677430070), (62, 338715035), (155, 135486014), (310, 67743007)]