21196610

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5449}}^1$

素因数の和:5845

約数の個数: 16

約数和(自身を含む): 38259000

約数和(自身を除く): 17062390

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 5449, 10898, 27245, 54490, 2119661, 4239322, 10598305, 21196610]

約数ペア:

[(1, 21196610), (2, 10598305), (5, 4239322), (10, 2119661), (389, 54490), (778, 27245), (1945, 10898), (3890, 5449)]