19721753

素因数分解:

${\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{241}}^1$

素因数の和:392

約数の個数: 16

約数和(自身を含む): 21489600

約数和(自身を除く): 1767847

約数列:

[1, 19, 59, 73, 241, 1121, 1387, 4307, 4579, 14219, 17593, 81833, 270161, 334267, 1037987, 19721753]

約数ペア:

[(1, 19721753), (19, 1037987), (59, 334267), (73, 270161), (241, 81833), (1121, 17593), (1387, 14219), (4307, 4579)]