220486520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{134443}}^1$

素因数の和:134495

約数の個数: 32

約数和(自身を含む): 508198320

約数和(自身を除く): 287711800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 134443, 268886, 537772, 672215, 1075544, 1344430, 2688860, 5377720, 5512163, 11024326, 22048652, 27560815, 44097304, 55121630, 110243260, 220486520]

約数ペア:

[(1, 220486520), (2, 110243260), (4, 55121630), (5, 44097304), (8, 27560815), (10, 22048652), (20, 11024326), (40, 5512163), (41, 5377720), (82, 2688860), (164, 1344430), (205, 1075544), (328, 672215), (410, 537772), (820, 268886), (1640, 134443)]