20399830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{10909}}^1$

素因数の和:10944

約数の個数: 32

約数和(自身を含む): 42418080

約数和(自身を除く): 22018250

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 374, 935, 1870, 10909, 21818, 54545, 109090, 119999, 185453, 239998, 370906, 599995, 927265, 1199990, 1854530, 2039983, 4079966, 10199915, 20399830]

約数ペア:

[(1, 20399830), (2, 10199915), (5, 4079966), (10, 2039983), (11, 1854530), (17, 1199990), (22, 927265), (34, 599995), (55, 370906), (85, 239998), (110, 185453), (170, 119999), (187, 109090), (374, 54545), (935, 21818), (1870, 10909)]