15840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{11}}^1$

素因数の和:32

約数の個数: 72

約数和(自身を含む): 58968

約数和(自身を除く): 43128

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 198, 220, 240, 264, 288, 330, 352, 360, 396, 440, 480, 495, 528, 660, 720, 792, 880, 990, 1056, 1320, 1440, 1584, 1760, 1980, 2640, 3168, 3960, 5280, 7920, 15840]

約数ペア:

[(1, 15840), (2, 7920), (3, 5280), (4, 3960), (5, 3168), (6, 2640), (8, 1980), (9, 1760), (10, 1584), (11, 1440), (12, 1320), (15, 1056), (16, 990), (18, 880), (20, 792), (22, 720), (24, 660), (30, 528), (32, 495), (33, 480), (36, 440), (40, 396), (44, 360), (45, 352), (48, 330), (55, 288), (60, 264), (66, 240), (72, 220), (80, 198), (88, 180), (90, 176), (96, 165), (99, 160), (110, 144), (120, 132)]