399872

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:100

約数の個数: 40

約数和(自身を含む): 883872

約数和(自身を除く): 484000

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 71, 88, 128, 142, 176, 256, 284, 352, 512, 568, 704, 781, 1136, 1408, 1562, 2272, 2816, 3124, 4544, 5632, 6248, 9088, 12496, 18176, 24992, 36352, 49984, 99968, 199936, 399872]

約数ペア:

[(1, 399872), (2, 199936), (4, 99968), (8, 49984), (11, 36352), (16, 24992), (22, 18176), (32, 12496), (44, 9088), (64, 6248), (71, 5632), (88, 4544), (128, 3124), (142, 2816), (176, 2272), (256, 1562), (284, 1408), (352, 1136), (512, 781), (568, 704)]