18930440

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4423}}^1$

素因数の和:4541

約数の個数: 32

約数和(自身を含む): 43001280

約数和(自身を除く): 24070840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4423, 8846, 17692, 22115, 35384, 44230, 88460, 176920, 473261, 946522, 1893044, 2366305, 3786088, 4732610, 9465220, 18930440]

約数ペア:

[(1, 18930440), (2, 9465220), (4, 4732610), (5, 3786088), (8, 2366305), (10, 1893044), (20, 946522), (40, 473261), (107, 176920), (214, 88460), (428, 44230), (535, 35384), (856, 22115), (1070, 17692), (2140, 8846), (4280, 4423)]