20681770

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20477}}^1$

素因数の和:20585

約数の個数: 16

約数和(自身を含む): 37597608

約数和(自身を除く): 16915838

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 20477, 40954, 102385, 204770, 2068177, 4136354, 10340885, 20681770]

約数ペア:

[(1, 20681770), (2, 10340885), (5, 4136354), (10, 2068177), (101, 204770), (202, 102385), (505, 40954), (1010, 20477)]