20846140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2441}}^1$

素因数の和:2518

約数の個数: 48

約数和(自身を含む): 50871744

約数和(自身を除く): 30025604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2441, 4270, 4882, 8540, 9764, 12205, 17087, 24410, 34174, 48820, 68348, 85435, 148901, 170870, 297802, 341740, 595604, 744505, 1042307, 1489010, 2084614, 2978020, 4169228, 5211535, 10423070, 20846140]

約数ペア:

[(1, 20846140), (2, 10423070), (4, 5211535), (5, 4169228), (7, 2978020), (10, 2084614), (14, 1489010), (20, 1042307), (28, 744505), (35, 595604), (61, 341740), (70, 297802), (122, 170870), (140, 148901), (244, 85435), (305, 68348), (427, 48820), (610, 34174), (854, 24410), (1220, 17087), (1708, 12205), (2135, 9764), (2441, 8540), (4270, 4882)]