21706688

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:381

約数の個数: 56

約数和(自身を含む): 46414944

約数和(自身を除く): 24708256

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 71, 136, 142, 272, 281, 284, 544, 562, 568, 1088, 1124, 1136, 1207, 2248, 2272, 2414, 4496, 4544, 4777, 4828, 8992, 9554, 9656, 17984, 19108, 19312, 19951, 38216, 38624, 39902, 76432, 77248, 79804, 152864, 159608, 305728, 319216, 339167, 638432, 678334, 1276864, 1356668, 2713336, 5426672, 10853344, 21706688]

約数ペア:

[(1, 21706688), (2, 10853344), (4, 5426672), (8, 2713336), (16, 1356668), (17, 1276864), (32, 678334), (34, 638432), (64, 339167), (68, 319216), (71, 305728), (136, 159608), (142, 152864), (272, 79804), (281, 77248), (284, 76432), (544, 39902), (562, 38624), (568, 38216), (1088, 19951), (1124, 19312), (1136, 19108), (1207, 17984), (2248, 9656), (2272, 9554), (2414, 8992), (4496, 4828), (4544, 4777)]