28427105

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{4001}}^1$

素因数の和:4049

約数の個数: 24

約数和(自身を含む): 41060520

約数和(自身を除く): 12633415

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 1015, 1421, 4001, 7105, 20005, 28007, 116029, 140035, 196049, 580145, 812203, 980245, 4061015, 5685421, 28427105]

約数ペア:

[(1, 28427105), (5, 5685421), (7, 4061015), (29, 980245), (35, 812203), (49, 580145), (145, 196049), (203, 140035), (245, 116029), (1015, 28007), (1421, 20005), (4001, 7105)]