21258830

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{40111}}^1$

素因数の和:40171

約数の個数: 16

約数和(自身を含む): 38988864

約数和(自身を除く): 17730034

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 40111, 80222, 200555, 401110, 2125883, 4251766, 10629415, 21258830]

約数ペア:

[(1, 21258830), (2, 10629415), (5, 4251766), (10, 2125883), (53, 401110), (106, 200555), (265, 80222), (530, 40111)]