21805445

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2579}}^1$

素因数の和:2692

約数の個数: 16

約数和(自身を含む): 27864000

約数和(自身を除く): 6058555

約数列:

[1, 5, 19, 89, 95, 445, 1691, 2579, 8455, 12895, 49001, 229531, 245005, 1147655, 4361089, 21805445]

約数ペア:

[(1, 21805445), (5, 4361089), (19, 1147655), (89, 245005), (95, 229531), (445, 49001), (1691, 12895), (2579, 8455)]