19372720

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2143}}^1$

素因数の和:2269

約数の個数: 40

約数和(自身を含む): 45461376

約数和(自身を除く): 26088656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2143, 2260, 4286, 4520, 8572, 9040, 10715, 17144, 21430, 34288, 42860, 85720, 171440, 242159, 484318, 968636, 1210795, 1937272, 2421590, 3874544, 4843180, 9686360, 19372720]

約数ペア:

[(1, 19372720), (2, 9686360), (4, 4843180), (5, 3874544), (8, 2421590), (10, 1937272), (16, 1210795), (20, 968636), (40, 484318), (80, 242159), (113, 171440), (226, 85720), (452, 42860), (565, 34288), (904, 21430), (1130, 17144), (1808, 10715), (2143, 9040), (2260, 8572), (4286, 4520)]