21790701

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{14159}}^1$

素因数の和:14190

約数の個数: 20

約数和(自身を含む): 34267200

約数和(自身を除く): 12476499

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 14159, 42477, 127431, 269021, 382293, 807063, 1146879, 2421189, 7263567, 21790701]

約数ペア:

[(1, 21790701), (3, 7263567), (9, 2421189), (19, 1146879), (27, 807063), (57, 382293), (81, 269021), (171, 127431), (513, 42477), (1539, 14159)]