261225

素因数分解:

$3^5\times 5^2\times {\mathrm{43}}^1$

素因数の和:68

約数の個数: 36

約数和(自身を含む): 496496

約数和(自身を除く): 235271

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 81, 129, 135, 215, 225, 243, 387, 405, 645, 675, 1075, 1161, 1215, 1935, 2025, 3225, 3483, 5805, 6075, 9675, 10449, 17415, 29025, 52245, 87075, 261225]

約数ペア:

[(1, 261225), (3, 87075), (5, 52245), (9, 29025), (15, 17415), (25, 10449), (27, 9675), (43, 6075), (45, 5805), (75, 3483), (81, 3225), (129, 2025), (135, 1935), (215, 1215), (225, 1161), (243, 1075), (387, 675), (405, 645)]