19163920

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{569}}^1$

素因数の和:1003

約数の個数: 40

約数和(自身を含む): 44740440

約数和(自身を除く): 25576520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 569, 842, 1138, 1684, 2105, 2276, 2845, 3368, 4210, 4552, 5690, 6736, 8420, 9104, 11380, 16840, 22760, 33680, 45520, 239549, 479098, 958196, 1197745, 1916392, 2395490, 3832784, 4790980, 9581960, 19163920]

約数ペア:

[(1, 19163920), (2, 9581960), (4, 4790980), (5, 3832784), (8, 2395490), (10, 1916392), (16, 1197745), (20, 958196), (40, 479098), (80, 239549), (421, 45520), (569, 33680), (842, 22760), (1138, 16840), (1684, 11380), (2105, 9104), (2276, 8420), (2845, 6736), (3368, 5690), (4210, 4552)]