20996600

素因数分解:

$2^3\times 5^2\times {\mathrm{277}}^1\times {\mathrm{379}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 49122600

約数和(自身を除く): 28126000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 277, 379, 554, 758, 1108, 1385, 1516, 1895, 2216, 2770, 3032, 3790, 5540, 6925, 7580, 9475, 11080, 13850, 15160, 18950, 27700, 37900, 55400, 75800, 104983, 209966, 419932, 524915, 839864, 1049830, 2099660, 2624575, 4199320, 5249150, 10498300, 20996600]

約数ペア:

[(1, 20996600), (2, 10498300), (4, 5249150), (5, 4199320), (8, 2624575), (10, 2099660), (20, 1049830), (25, 839864), (40, 524915), (50, 419932), (100, 209966), (200, 104983), (277, 75800), (379, 55400), (554, 37900), (758, 27700), (1108, 18950), (1385, 15160), (1516, 13850), (1895, 11080), (2216, 9475), (2770, 7580), (3032, 6925), (3790, 5540)]