20824784

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1213}}^1$

素因数の和:1287

約数の個数: 40

約数和(自身を含む): 42902760

約数和(自身を除く): 22077976

約数列:

[1, 2, 4, 8, 16, 29, 37, 58, 74, 116, 148, 232, 296, 464, 592, 1073, 1213, 2146, 2426, 4292, 4852, 8584, 9704, 17168, 19408, 35177, 44881, 70354, 89762, 140708, 179524, 281416, 359048, 562832, 718096, 1301549, 2603098, 5206196, 10412392, 20824784]

約数ペア:

[(1, 20824784), (2, 10412392), (4, 5206196), (8, 2603098), (16, 1301549), (29, 718096), (37, 562832), (58, 359048), (74, 281416), (116, 179524), (148, 140708), (232, 89762), (296, 70354), (464, 44881), (592, 35177), (1073, 19408), (1213, 17168), (2146, 9704), (2426, 8584), (4292, 4852)]