21165250

素因数分解:

$2^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{2731}}^1$

素因数の和:2779

約数の個数: 32

約数和(自身を含む): 40914432

約数和(自身を除く): 19749182

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 775, 1550, 2731, 3875, 5462, 7750, 13655, 27310, 68275, 84661, 136550, 169322, 341375, 423305, 682750, 846610, 2116525, 4233050, 10582625, 21165250]

約数ペア:

[(1, 21165250), (2, 10582625), (5, 4233050), (10, 2116525), (25, 846610), (31, 682750), (50, 423305), (62, 341375), (125, 169322), (155, 136550), (250, 84661), (310, 68275), (775, 27310), (1550, 13655), (2731, 7750), (3875, 5462)]