23978020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{108991}}^1$

素因数の和:109011

約数の個数: 24

約数和(自身を含む): 54931968

約数和(自身を除く): 30953948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 108991, 217982, 435964, 544955, 1089910, 1198901, 2179820, 2397802, 4795604, 5994505, 11989010, 23978020]

約数ペア:

[(1, 23978020), (2, 11989010), (4, 5994505), (5, 4795604), (10, 2397802), (11, 2179820), (20, 1198901), (22, 1089910), (44, 544955), (55, 435964), (110, 217982), (220, 108991)]