1390752020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{87911}}^1$

素因数の和:88040

約数の個数: 48

約数和(自身を含む): 3367381248

約数和(自身を除く): 1976629228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 140, 226, 452, 565, 791, 1130, 1582, 2260, 3164, 3955, 7910, 15820, 87911, 175822, 351644, 439555, 615377, 879110, 1230754, 1758220, 2461508, 3076885, 6153770, 9933943, 12307540, 19867886, 39735772, 49669715, 69537601, 99339430, 139075202, 198678860, 278150404, 347688005, 695376010, 1390752020]

約数ペア:

[(1, 1390752020), (2, 695376010), (4, 347688005), (5, 278150404), (7, 198678860), (10, 139075202), (14, 99339430), (20, 69537601), (28, 49669715), (35, 39735772), (70, 19867886), (113, 12307540), (140, 9933943), (226, 6153770), (452, 3076885), (565, 2461508), (791, 1758220), (1130, 1230754), (1582, 879110), (2260, 615377), (3164, 439555), (3955, 351644), (7910, 175822), (15820, 87911)]