20309690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:646

約数の個数: 32

約数和(自身を含む): 38413440

約数和(自身を除く): 18103750

約数列:

[1, 2, 5, 10, 23, 46, 115, 227, 230, 389, 454, 778, 1135, 1945, 2270, 3890, 5221, 8947, 10442, 17894, 26105, 44735, 52210, 88303, 89470, 176606, 441515, 883030, 2030969, 4061938, 10154845, 20309690]

約数ペア:

[(1, 20309690), (2, 10154845), (5, 4061938), (10, 2030969), (23, 883030), (46, 441515), (115, 176606), (227, 89470), (230, 88303), (389, 52210), (454, 44735), (778, 26105), (1135, 17894), (1945, 10442), (2270, 8947), (3890, 5221)]