19163020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 42739200

約数和(自身を除く): 23576180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 211, 239, 380, 422, 478, 844, 956, 1055, 1195, 2110, 2390, 4009, 4220, 4541, 4780, 8018, 9082, 16036, 18164, 20045, 22705, 40090, 45410, 50429, 80180, 90820, 100858, 201716, 252145, 504290, 958151, 1008580, 1916302, 3832604, 4790755, 9581510, 19163020]

約数ペア:

[(1, 19163020), (2, 9581510), (4, 4790755), (5, 3832604), (10, 1916302), (19, 1008580), (20, 958151), (38, 504290), (76, 252145), (95, 201716), (190, 100858), (211, 90820), (239, 80180), (380, 50429), (422, 45410), (478, 40090), (844, 22705), (956, 20045), (1055, 18164), (1195, 16036), (2110, 9082), (2390, 8018), (4009, 4780), (4220, 4541)]