20655900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:468

約数の個数: 108

約数和(自身を含む): 66011400

約数和(自身を除く): 45355500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 59, 60, 75, 90, 100, 118, 150, 177, 180, 225, 236, 295, 300, 354, 389, 450, 531, 590, 708, 778, 885, 900, 1062, 1167, 1180, 1475, 1556, 1770, 1945, 2124, 2334, 2655, 2950, 3501, 3540, 3890, 4425, 4668, 5310, 5835, 5900, 7002, 7780, 8850, 9725, 10620, 11670, 13275, 14004, 17505, 17700, 19450, 22951, 23340, 26550, 29175, 35010, 38900, 45902, 53100, 58350, 68853, 70020, 87525, 91804, 114755, 116700, 137706, 175050, 206559, 229510, 275412, 344265, 350100, 413118, 459020, 573775, 688530, 826236, 1032795, 1147550, 1377060, 1721325, 2065590, 2295100, 3442650, 4131180, 5163975, 6885300, 10327950, 20655900]

約数ペア:

[(1, 20655900), (2, 10327950), (3, 6885300), (4, 5163975), (5, 4131180), (6, 3442650), (9, 2295100), (10, 2065590), (12, 1721325), (15, 1377060), (18, 1147550), (20, 1032795), (25, 826236), (30, 688530), (36, 573775), (45, 459020), (50, 413118), (59, 350100), (60, 344265), (75, 275412), (90, 229510), (100, 206559), (118, 175050), (150, 137706), (177, 116700), (180, 114755), (225, 91804), (236, 87525), (295, 70020), (300, 68853), (354, 58350), (389, 53100), (450, 45902), (531, 38900), (590, 35010), (708, 29175), (778, 26550), (885, 23340), (900, 22951), (1062, 19450), (1167, 17700), (1180, 17505), (1475, 14004), (1556, 13275), (1770, 11670), (1945, 10620), (2124, 9725), (2334, 8850), (2655, 7780), (2950, 7002), (3501, 5900), (3540, 5835), (3890, 5310), (4425, 4668)]