28387440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:551

約数の個数: 120

約数和(自身を含む): 96623280

約数和(自身を除く): 68235840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 89, 90, 120, 144, 178, 180, 240, 267, 356, 360, 443, 445, 534, 712, 720, 801, 886, 890, 1068, 1329, 1335, 1424, 1602, 1772, 1780, 2136, 2215, 2658, 2670, 3204, 3544, 3560, 3987, 4005, 4272, 4430, 5316, 5340, 6408, 6645, 7088, 7120, 7974, 8010, 8860, 10632, 10680, 12816, 13290, 15948, 16020, 17720, 19935, 21264, 21360, 26580, 31896, 32040, 35440, 39427, 39870, 53160, 63792, 64080, 78854, 79740, 106320, 118281, 157708, 159480, 197135, 236562, 315416, 318960, 354843, 394270, 473124, 591405, 630832, 709686, 788540, 946248, 1182810, 1419372, 1577080, 1774215, 1892496, 2365620, 2838744, 3154160, 3548430, 4731240, 5677488, 7096860, 9462480, 14193720, 28387440]

約数ペア:

[(1, 28387440), (2, 14193720), (3, 9462480), (4, 7096860), (5, 5677488), (6, 4731240), (8, 3548430), (9, 3154160), (10, 2838744), (12, 2365620), (15, 1892496), (16, 1774215), (18, 1577080), (20, 1419372), (24, 1182810), (30, 946248), (36, 788540), (40, 709686), (45, 630832), (48, 591405), (60, 473124), (72, 394270), (80, 354843), (89, 318960), (90, 315416), (120, 236562), (144, 197135), (178, 159480), (180, 157708), (240, 118281), (267, 106320), (356, 79740), (360, 78854), (443, 64080), (445, 63792), (534, 53160), (712, 39870), (720, 39427), (801, 35440), (886, 32040), (890, 31896), (1068, 26580), (1329, 21360), (1335, 21264), (1424, 19935), (1602, 17720), (1772, 16020), (1780, 15948), (2136, 13290), (2215, 12816), (2658, 10680), (2670, 10632), (3204, 8860), (3544, 8010), (3560, 7974), (3987, 7120), (4005, 7088), (4272, 6645), (4430, 6408), (5316, 5340)]