12780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1$

素因数の和:86

約数の個数: 36

約数和(自身を含む): 39312

約数和(自身を除く): 26532

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4260, 6390, 12780]

約数ペア:

[(1, 12780), (2, 6390), (3, 4260), (4, 3195), (5, 2556), (6, 2130), (9, 1420), (10, 1278), (12, 1065), (15, 852), (18, 710), (20, 639), (30, 426), (36, 355), (45, 284), (60, 213), (71, 180), (90, 142)]