21097760

素因数分解:

$2^5\times 5^1\times {\mathrm{131861}}^1$

素因数の和:131876

約数の個数: 24

約数和(自身を含む): 49843836

約数和(自身を除く): 28746076

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131861, 263722, 527444, 659305, 1054888, 1318610, 2109776, 2637220, 4219552, 5274440, 10548880, 21097760]

約数ペア:

[(1, 21097760), (2, 10548880), (4, 5274440), (5, 4219552), (8, 2637220), (10, 2109776), (16, 1318610), (20, 1054888), (32, 659305), (40, 527444), (80, 263722), (160, 131861)]