728109

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:202

約数の個数: 20

約数和(自身を含む): 1110780

約数和(自身を除く): 382671

約数列:

[1, 3, 9, 27, 81, 89, 101, 267, 303, 801, 909, 2403, 2727, 7209, 8181, 8989, 26967, 80901, 242703, 728109]

約数ペア:

[(1, 728109), (3, 242703), (9, 80901), (27, 26967), (81, 8989), (89, 8181), (101, 7209), (267, 2727), (303, 2403), (801, 909)]