18729005

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{887}}^1$

素因数の和:1036

約数の個数: 16

約数和(自身を含む): 23272704

約数和(自身を除く): 4543699

約数列:

[1, 5, 41, 103, 205, 515, 887, 4223, 4435, 21115, 36367, 91361, 181835, 456805, 3745801, 18729005]

約数ペア:

[(1, 18729005), (5, 3745801), (41, 456805), (103, 181835), (205, 91361), (515, 36367), (887, 21115), (4223, 4435)]