18968120

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2089}}^1$

素因数の和:2327

約数の個数: 32

約数和(自身を含む): 42886800

約数和(自身を除く): 23918680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2089, 2270, 4178, 4540, 8356, 9080, 10445, 16712, 20890, 41780, 83560, 474203, 948406, 1896812, 2371015, 3793624, 4742030, 9484060, 18968120]

約数ペア:

[(1, 18968120), (2, 9484060), (4, 4742030), (5, 3793624), (8, 2371015), (10, 1896812), (20, 948406), (40, 474203), (227, 83560), (454, 41780), (908, 20890), (1135, 16712), (1816, 10445), (2089, 9080), (2270, 8356), (4178, 4540)]