21187085905

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1\times {\mathrm{199211}}^1$

素因数の和:199544

約数の個数: 16

約数和(自身を含む): 25817875200

約数和(自身を除く): 4630789295

約数列:

[1, 5, 89, 239, 445, 1195, 21271, 106355, 199211, 996055, 17729779, 47611429, 88648895, 238057145, 4237417181, 21187085905]

約数ペア:

[(1, 21187085905), (5, 4237417181), (89, 238057145), (239, 88648895), (445, 47611429), (1195, 17729779), (21271, 996055), (106355, 199211)]