21120

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1$

素因数の和:33

約数の個数: 64

約数和(自身を含む): 73440

約数和(自身を除く): 52320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 128, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 384, 440, 480, 528, 640, 660, 704, 880, 960, 1056, 1320, 1408, 1760, 1920, 2112, 2640, 3520, 4224, 5280, 7040, 10560, 21120]

約数ペア:

[(1, 21120), (2, 10560), (3, 7040), (4, 5280), (5, 4224), (6, 3520), (8, 2640), (10, 2112), (11, 1920), (12, 1760), (15, 1408), (16, 1320), (20, 1056), (22, 960), (24, 880), (30, 704), (32, 660), (33, 640), (40, 528), (44, 480), (48, 440), (55, 384), (60, 352), (64, 330), (66, 320), (80, 264), (88, 240), (96, 220), (110, 192), (120, 176), (128, 165), (132, 160)]