21129916

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{953}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 38785824

約数和(自身を除く): 17655908

約数列:

[1, 2, 4, 23, 46, 92, 241, 482, 953, 964, 1906, 3812, 5543, 11086, 21919, 22172, 43838, 87676, 229673, 459346, 918692, 5282479, 10564958, 21129916]

約数ペア:

[(1, 21129916), (2, 10564958), (4, 5282479), (23, 918692), (46, 459346), (92, 229673), (241, 87676), (482, 43838), (953, 22172), (964, 21919), (1906, 11086), (3812, 5543)]