991340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 2436672

約数和(自身を除く): 1445332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 97, 140, 146, 194, 292, 365, 388, 485, 511, 679, 730, 970, 1022, 1358, 1460, 1940, 2044, 2555, 2716, 3395, 5110, 6790, 7081, 10220, 13580, 14162, 28324, 35405, 49567, 70810, 99134, 141620, 198268, 247835, 495670, 991340]

約数ペア:

[(1, 991340), (2, 495670), (4, 247835), (5, 198268), (7, 141620), (10, 99134), (14, 70810), (20, 49567), (28, 35405), (35, 28324), (70, 14162), (73, 13580), (97, 10220), (140, 7081), (146, 6790), (194, 5110), (292, 3395), (365, 2716), (388, 2555), (485, 2044), (511, 1940), (679, 1460), (730, 1358), (970, 1022)]