20365984

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:317

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 21461984

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 103, 148, 167, 206, 296, 334, 412, 592, 668, 824, 1184, 1336, 1648, 2672, 3296, 3811, 5344, 6179, 7622, 12358, 15244, 17201, 24716, 30488, 34402, 49432, 60976, 68804, 98864, 121952, 137608, 197728, 275216, 550432, 636437, 1272874, 2545748, 5091496, 10182992, 20365984]

約数ペア:

[(1, 20365984), (2, 10182992), (4, 5091496), (8, 2545748), (16, 1272874), (32, 636437), (37, 550432), (74, 275216), (103, 197728), (148, 137608), (167, 121952), (206, 98864), (296, 68804), (334, 60976), (412, 49432), (592, 34402), (668, 30488), (824, 24716), (1184, 17201), (1336, 15244), (1648, 12358), (2672, 7622), (3296, 6179), (3811, 5344)]