20429824

素因数分解:

$2^{10}\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:372

約数の個数: 44

約数和(自身を含む): 41562288

約数和(自身を除く): 21132464

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 256, 281, 284, 512, 562, 568, 1024, 1124, 1136, 2248, 2272, 4496, 4544, 8992, 9088, 17984, 18176, 19951, 35968, 36352, 39902, 71936, 72704, 79804, 143872, 159608, 287744, 319216, 638432, 1276864, 2553728, 5107456, 10214912, 20429824]

約数ペア:

[(1, 20429824), (2, 10214912), (4, 5107456), (8, 2553728), (16, 1276864), (32, 638432), (64, 319216), (71, 287744), (128, 159608), (142, 143872), (256, 79804), (281, 72704), (284, 71936), (512, 39902), (562, 36352), (568, 35968), (1024, 19951), (1124, 18176), (1136, 17984), (2248, 9088), (2272, 8992), (4496, 4544)]