20123456

素因数分解:

$2^6\times {\mathrm{41}}^1\times {\mathrm{7669}}^1$

素因数の和:7722

約数の個数: 28

約数和(自身を含む): 40911780

約数和(自身を除く): 20788324

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 164, 328, 656, 1312, 2624, 7669, 15338, 30676, 61352, 122704, 245408, 314429, 490816, 628858, 1257716, 2515432, 5030864, 10061728, 20123456]

約数ペア:

[(1, 20123456), (2, 10061728), (4, 5030864), (8, 2515432), (16, 1257716), (32, 628858), (41, 490816), (64, 314429), (82, 245408), (164, 122704), (328, 61352), (656, 30676), (1312, 15338), (2624, 7669)]