20657248

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 42517440

約数和(自身を除く): 21860192

約数列:

[1, 2, 4, 8, 16, 32, 37, 73, 74, 146, 148, 239, 292, 296, 478, 584, 592, 956, 1168, 1184, 1912, 2336, 2701, 3824, 5402, 7648, 8843, 10804, 17447, 17686, 21608, 34894, 35372, 43216, 69788, 70744, 86432, 139576, 141488, 279152, 282976, 558304, 645539, 1291078, 2582156, 5164312, 10328624, 20657248]

約数ペア:

[(1, 20657248), (2, 10328624), (4, 5164312), (8, 2582156), (16, 1291078), (32, 645539), (37, 558304), (73, 282976), (74, 279152), (146, 141488), (148, 139576), (239, 86432), (292, 70744), (296, 69788), (478, 43216), (584, 35372), (592, 34894), (956, 21608), (1168, 17686), (1184, 17447), (1912, 10804), (2336, 8843), (2701, 7648), (3824, 5402)]