199721811

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{661}}^1$

素因数の和:867

約数の個数: 32

約数和(自身を含む): 289797120

約数和(自身を除く): 90075309

約数列:

[1, 3, 23, 29, 69, 87, 151, 453, 661, 667, 1983, 2001, 3473, 4379, 10419, 13137, 15203, 19169, 45609, 57507, 99811, 100717, 299433, 302151, 440887, 1322661, 2295653, 2894519, 6886959, 8683557, 66573937, 199721811]

約数ペア:

[(1, 199721811), (3, 66573937), (23, 8683557), (29, 6886959), (69, 2894519), (87, 2295653), (151, 1322661), (453, 440887), (661, 302151), (667, 299433), (1983, 100717), (2001, 99811), (3473, 57507), (4379, 45609), (10419, 19169), (13137, 15203)]