15858220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{499}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 38304000

約数和(自身を除く): 22445780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 227, 454, 499, 908, 998, 1135, 1589, 1996, 2270, 2495, 3178, 3493, 4540, 4990, 6356, 6986, 7945, 9980, 13972, 15890, 17465, 31780, 34930, 69860, 113273, 226546, 453092, 566365, 792911, 1132730, 1585822, 2265460, 3171644, 3964555, 7929110, 15858220]

約数ペア:

[(1, 15858220), (2, 7929110), (4, 3964555), (5, 3171644), (7, 2265460), (10, 1585822), (14, 1132730), (20, 792911), (28, 566365), (35, 453092), (70, 226546), (140, 113273), (227, 69860), (454, 34930), (499, 31780), (908, 17465), (998, 15890), (1135, 13972), (1589, 9980), (1996, 7945), (2270, 6986), (2495, 6356), (3178, 4990), (3493, 4540)]