18215973

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1089

約数の個数: 24

約数和(自身を含む): 27630720

約数和(自身を除く): 9414747

約数列:

[1, 3, 9, 29, 71, 87, 213, 261, 639, 983, 2059, 2949, 6177, 8847, 18531, 28507, 69793, 85521, 209379, 256563, 628137, 2023997, 6071991, 18215973]

約数ペア:

[(1, 18215973), (3, 6071991), (9, 2023997), (29, 628137), (71, 256563), (87, 209379), (213, 85521), (261, 69793), (639, 28507), (983, 18531), (2059, 8847), (2949, 6177)]