21203984

素因数分解:

$2^4\times {\mathrm{659}}^1\times {\mathrm{2011}}^1$

素因数の和:2678

約数の個数: 20

約数和(自身を含む): 41165520

約数和(自身を除く): 19961536

約数列:

[1, 2, 4, 8, 16, 659, 1318, 2011, 2636, 4022, 5272, 8044, 10544, 16088, 32176, 1325249, 2650498, 5300996, 10601992, 21203984]

約数ペア:

[(1, 21203984), (2, 10601992), (4, 5300996), (8, 2650498), (16, 1325249), (659, 32176), (1318, 16088), (2011, 10544), (2636, 8044), (4022, 5272)]