20988995

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{797}}^1$

素因数の和:1054

約数の個数: 16

約数和(自身を含む): 26429760

約数和(自身を除く): 5440765

約数列:

[1, 5, 23, 115, 229, 797, 1145, 3985, 5267, 18331, 26335, 91655, 182513, 912565, 4197799, 20988995]

約数ペア:

[(1, 20988995), (5, 4197799), (23, 912565), (115, 182513), (229, 91655), (797, 26335), (1145, 18331), (3985, 5267)]