20880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29}}^1$

素因数の和:48

約数の個数: 60

約数和(自身を含む): 72540

約数和(自身を除く): 51660

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 116, 120, 144, 145, 174, 180, 232, 240, 261, 290, 348, 360, 435, 464, 522, 580, 696, 720, 870, 1044, 1160, 1305, 1392, 1740, 2088, 2320, 2610, 3480, 4176, 5220, 6960, 10440, 20880]

約数ペア:

[(1, 20880), (2, 10440), (3, 6960), (4, 5220), (5, 4176), (6, 3480), (8, 2610), (9, 2320), (10, 2088), (12, 1740), (15, 1392), (16, 1305), (18, 1160), (20, 1044), (24, 870), (29, 720), (30, 696), (36, 580), (40, 522), (45, 464), (48, 435), (58, 360), (60, 348), (72, 290), (80, 261), (87, 240), (90, 232), (116, 180), (120, 174), (144, 145)]