19720887

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1\times {\mathrm{317}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 26788320

約数和(自身を除く): 7067433

約数列:

[1, 3, 89, 233, 267, 317, 699, 951, 20737, 28213, 62211, 73861, 84639, 221583, 6573629, 19720887]

約数ペア:

[(1, 19720887), (3, 6573629), (89, 221583), (233, 84639), (267, 73861), (317, 62211), (699, 28213), (951, 20737)]