400401010

素因数分解:

$2^1\times 5^1\times {\mathrm{1549}}^1\times {\mathrm{25849}}^1$

素因数の和:27405

約数の個数: 16

約数和(自身を含む): 721215000

約数和(自身を除く): 320813990

約数列:

[1, 2, 5, 10, 1549, 3098, 7745, 15490, 25849, 51698, 129245, 258490, 40040101, 80080202, 200200505, 400401010]

約数ペア:

[(1, 400401010), (2, 200200505), (5, 80080202), (10, 40040101), (1549, 258490), (3098, 129245), (7745, 51698), (15490, 25849)]