21869980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99409}}^1$

素因数の和:99429

約数の個数: 24

約数和(自身を含む): 50102640

約数和(自身を除く): 28232660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99409, 198818, 397636, 497045, 994090, 1093499, 1988180, 2186998, 4373996, 5467495, 10934990, 21869980]

約数ペア:

[(1, 21869980), (2, 10934990), (4, 5467495), (5, 4373996), (10, 2186998), (11, 1988180), (20, 1093499), (22, 994090), (44, 497045), (55, 397636), (110, 198818), (220, 99409)]