19873790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64109}}^1$

素因数の和:64147

約数の個数: 16

約数和(自身を含む): 36927360

約数和(自身を除く): 17053570

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 64109, 128218, 320545, 641090, 1987379, 3974758, 9936895, 19873790]

約数ペア:

[(1, 19873790), (2, 9936895), (5, 3974758), (10, 1987379), (31, 641090), (62, 320545), (155, 128218), (310, 64109)]