19225820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 22602148

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 113, 181, 188, 226, 235, 362, 452, 470, 565, 724, 905, 940, 1130, 1810, 2260, 3620, 5311, 8507, 10622, 17014, 20453, 21244, 26555, 34028, 40906, 42535, 53110, 81812, 85070, 102265, 106220, 170140, 204530, 409060, 961291, 1922582, 3845164, 4806455, 9612910, 19225820]

約数ペア:

[(1, 19225820), (2, 9612910), (4, 4806455), (5, 3845164), (10, 1922582), (20, 961291), (47, 409060), (94, 204530), (113, 170140), (181, 106220), (188, 102265), (226, 85070), (235, 81812), (362, 53110), (452, 42535), (470, 40906), (565, 34028), (724, 26555), (905, 21244), (940, 20453), (1130, 17014), (1810, 10622), (2260, 8507), (3620, 5311)]