21197984

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 43436736

約数和(自身を除く): 22238752

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 107, 151, 164, 214, 302, 328, 428, 604, 656, 856, 1208, 1312, 1712, 2416, 3424, 4387, 4832, 6191, 8774, 12382, 16157, 17548, 24764, 32314, 35096, 49528, 64628, 70192, 99056, 129256, 140384, 198112, 258512, 517024, 662437, 1324874, 2649748, 5299496, 10598992, 21197984]

約数ペア:

[(1, 21197984), (2, 10598992), (4, 5299496), (8, 2649748), (16, 1324874), (32, 662437), (41, 517024), (82, 258512), (107, 198112), (151, 140384), (164, 129256), (214, 99056), (302, 70192), (328, 64628), (428, 49528), (604, 35096), (656, 32314), (856, 24764), (1208, 17548), (1312, 16157), (1712, 12382), (2416, 8774), (3424, 6191), (4387, 4832)]