19426660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 25389020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 227, 389, 454, 778, 908, 1135, 1556, 1945, 2270, 2497, 3890, 4279, 4540, 4994, 7780, 8558, 9988, 12485, 17116, 21395, 24970, 42790, 49940, 85580, 88303, 176606, 353212, 441515, 883030, 971333, 1766060, 1942666, 3885332, 4856665, 9713330, 19426660]

約数ペア:

[(1, 19426660), (2, 9713330), (4, 4856665), (5, 3885332), (10, 1942666), (11, 1766060), (20, 971333), (22, 883030), (44, 441515), (55, 353212), (110, 176606), (220, 88303), (227, 85580), (389, 49940), (454, 42790), (778, 24970), (908, 21395), (1135, 17116), (1556, 12485), (1945, 9988), (2270, 8558), (2497, 7780), (3890, 4994), (4279, 4540)]