21507107

素因数分解:

${\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:346

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 1820893

約数列:

[1, 19, 71, 107, 149, 1349, 2033, 2831, 7597, 10579, 15943, 144343, 201001, 302917, 1131953, 21507107]

約数ペア:

[(1, 21507107), (19, 1131953), (71, 302917), (107, 201001), (149, 144343), (1349, 15943), (2033, 10579), (2831, 7597)]