20821570557

素因数分解:

$3^1\times {\mathrm{331}}^1\times {\mathrm{397}}^1\times {\mathrm{52817}}^1$

素因数の和:53548

約数の個数: 16

約数和(自身を含む): 27916636992

約数和(自身を除く): 7095066435

約数列:

[1, 3, 331, 397, 993, 1191, 52817, 131407, 158451, 394221, 17482427, 20968349, 52447281, 62905047, 6940523519, 20821570557]

約数ペア:

[(1, 20821570557), (3, 6940523519), (331, 62905047), (397, 52447281), (993, 20968349), (1191, 17482427), (52817, 394221), (131407, 158451)]