20855860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24251}}^1$

素因数の和:24303

約数の個数: 24

約数和(自身を含む): 44817696

約数和(自身を除く): 23961836

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24251, 48502, 97004, 121255, 242510, 485020, 1042793, 2085586, 4171172, 5213965, 10427930, 20855860]

約数ペア:

[(1, 20855860), (2, 10427930), (4, 5213965), (5, 4171172), (10, 2085586), (20, 1042793), (43, 485020), (86, 242510), (172, 121255), (215, 97004), (430, 48502), (860, 24251)]