18724865

素因数分解:

$5^1\times {\mathrm{29}}^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:197

約数の個数: 24

約数和(自身を含む): 23976888

約数和(自身を除く): 5252023

約数列:

[1, 5, 29, 61, 73, 145, 305, 365, 841, 1769, 2117, 4205, 4453, 8845, 10585, 22265, 51301, 61393, 129137, 256505, 306965, 645685, 3744973, 18724865]

約数ペア:

[(1, 18724865), (5, 3744973), (29, 645685), (61, 306965), (73, 256505), (145, 129137), (305, 61393), (365, 51301), (841, 22265), (1769, 10585), (2117, 8845), (4205, 4453)]