31800215

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2543}}^1$

素因数の和:2650

約数の個数: 16

約数和(自身を含む): 39747456

約数和(自身を除く): 7947241

約数列:

[1, 5, 41, 61, 205, 305, 2501, 2543, 12505, 12715, 104263, 155123, 521315, 775615, 6360043, 31800215]

約数ペア:

[(1, 31800215), (5, 6360043), (41, 775615), (61, 521315), (205, 155123), (305, 104263), (2501, 12715), (2543, 12505)]