20181872

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{467}}^1$

素因数の和:585

約数の個数: 40

約数和(自身を含む): 40796496

約数和(自身を除く): 20614624

約数列:

[1, 2, 4, 8, 16, 37, 73, 74, 146, 148, 292, 296, 467, 584, 592, 934, 1168, 1868, 2701, 3736, 5402, 7472, 10804, 17279, 21608, 34091, 34558, 43216, 68182, 69116, 136364, 138232, 272728, 276464, 545456, 1261367, 2522734, 5045468, 10090936, 20181872]

約数ペア:

[(1, 20181872), (2, 10090936), (4, 5045468), (8, 2522734), (16, 1261367), (37, 545456), (73, 276464), (74, 272728), (146, 138232), (148, 136364), (292, 69116), (296, 68182), (467, 43216), (584, 34558), (592, 34091), (934, 21608), (1168, 17279), (1868, 10804), (2701, 7472), (3736, 5402)]