21717920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19391}}^1$

素因数の和:19413

約数の個数: 48

約数和(自身を含む): 58641408

約数和(自身を除く): 36923488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19391, 38782, 77564, 96955, 135737, 155128, 193910, 271474, 310256, 387820, 542948, 620512, 678685, 775640, 1085896, 1357370, 1551280, 2171792, 2714740, 3102560, 4343584, 5429480, 10858960, 21717920]

約数ペア:

[(1, 21717920), (2, 10858960), (4, 5429480), (5, 4343584), (7, 3102560), (8, 2714740), (10, 2171792), (14, 1551280), (16, 1357370), (20, 1085896), (28, 775640), (32, 678685), (35, 620512), (40, 542948), (56, 387820), (70, 310256), (80, 271474), (112, 193910), (140, 155128), (160, 135737), (224, 96955), (280, 77564), (560, 38782), (1120, 19391)]