20687400

素因数分解:

$2^3\times 3^4\times 5^2\times {\mathrm{1277}}^1$

素因数の和:1305

約数の個数: 120

約数和(自身を含む): 71906670

約数和(自身を除く): 51219270

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 27, 30, 36, 40, 45, 50, 54, 60, 72, 75, 81, 90, 100, 108, 120, 135, 150, 162, 180, 200, 216, 225, 270, 300, 324, 360, 405, 450, 540, 600, 648, 675, 810, 900, 1080, 1277, 1350, 1620, 1800, 2025, 2554, 2700, 3240, 3831, 4050, 5108, 5400, 6385, 7662, 8100, 10216, 11493, 12770, 15324, 16200, 19155, 22986, 25540, 30648, 31925, 34479, 38310, 45972, 51080, 57465, 63850, 68958, 76620, 91944, 95775, 103437, 114930, 127700, 137916, 153240, 172395, 191550, 206874, 229860, 255400, 275832, 287325, 344790, 383100, 413748, 459720, 517185, 574650, 689580, 766200, 827496, 861975, 1034370, 1149300, 1379160, 1723950, 2068740, 2298600, 2585925, 3447900, 4137480, 5171850, 6895800, 10343700, 20687400]

約数ペア:

[(1, 20687400), (2, 10343700), (3, 6895800), (4, 5171850), (5, 4137480), (6, 3447900), (8, 2585925), (9, 2298600), (10, 2068740), (12, 1723950), (15, 1379160), (18, 1149300), (20, 1034370), (24, 861975), (25, 827496), (27, 766200), (30, 689580), (36, 574650), (40, 517185), (45, 459720), (50, 413748), (54, 383100), (60, 344790), (72, 287325), (75, 275832), (81, 255400), (90, 229860), (100, 206874), (108, 191550), (120, 172395), (135, 153240), (150, 137916), (162, 127700), (180, 114930), (200, 103437), (216, 95775), (225, 91944), (270, 76620), (300, 68958), (324, 63850), (360, 57465), (405, 51080), (450, 45972), (540, 38310), (600, 34479), (648, 31925), (675, 30648), (810, 25540), (900, 22986), (1080, 19155), (1277, 16200), (1350, 15324), (1620, 12770), (1800, 11493), (2025, 10216), (2554, 8100), (2700, 7662), (3240, 6385), (3831, 5400), (4050, 5108)]