21390848

素因数分解:

$2^9\times {\mathrm{41}}^1\times {\mathrm{1019}}^1$

素因数の和:1078

約数の個数: 40

約数和(自身を含む): 43825320

約数和(自身を除く): 22434472

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 128, 164, 256, 328, 512, 656, 1019, 1312, 2038, 2624, 4076, 5248, 8152, 10496, 16304, 20992, 32608, 41779, 65216, 83558, 130432, 167116, 260864, 334232, 521728, 668464, 1336928, 2673856, 5347712, 10695424, 21390848]

約数ペア:

[(1, 21390848), (2, 10695424), (4, 5347712), (8, 2673856), (16, 1336928), (32, 668464), (41, 521728), (64, 334232), (82, 260864), (128, 167116), (164, 130432), (256, 83558), (328, 65216), (512, 41779), (656, 32608), (1019, 20992), (1312, 16304), (2038, 10496), (2624, 8152), (4076, 5248)]