1215567

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:404

約数の個数: 20

約数和(自身を含む): 1863400

約数和(自身を除く): 647833

約数列:

[1, 3, 9, 27, 43, 81, 129, 349, 387, 1047, 1161, 3141, 3483, 9423, 15007, 28269, 45021, 135063, 405189, 1215567]

約数ペア:

[(1, 1215567), (3, 405189), (9, 135063), (27, 45021), (43, 28269), (81, 15007), (129, 9423), (349, 3483), (387, 3141), (1047, 1161)]