20781600

素因数分解:

$2^5\times 3^1\times 5^2\times 7^1\times {\mathrm{1237}}^1$

素因数の和:1267

約数の個数: 144

約数和(自身を含む): 77370048

約数和(自身を除く): 56588448

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 32, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 96, 100, 105, 112, 120, 140, 150, 160, 168, 175, 200, 210, 224, 240, 280, 300, 336, 350, 400, 420, 480, 525, 560, 600, 672, 700, 800, 840, 1050, 1120, 1200, 1237, 1400, 1680, 2100, 2400, 2474, 2800, 3360, 3711, 4200, 4948, 5600, 6185, 7422, 8400, 8659, 9896, 12370, 14844, 16800, 17318, 18555, 19792, 24740, 25977, 29688, 30925, 34636, 37110, 39584, 43295, 49480, 51954, 59376, 61850, 69272, 74220, 86590, 92775, 98960, 103908, 118752, 123700, 129885, 138544, 148440, 173180, 185550, 197920, 207816, 216475, 247400, 259770, 277088, 296880, 346360, 371100, 415632, 432950, 494800, 519540, 593760, 649425, 692720, 742200, 831264, 865900, 989600, 1039080, 1298850, 1385440, 1484400, 1731800, 2078160, 2597700, 2968800, 3463600, 4156320, 5195400, 6927200, 10390800, 20781600]

約数ペア:

[(1, 20781600), (2, 10390800), (3, 6927200), (4, 5195400), (5, 4156320), (6, 3463600), (7, 2968800), (8, 2597700), (10, 2078160), (12, 1731800), (14, 1484400), (15, 1385440), (16, 1298850), (20, 1039080), (21, 989600), (24, 865900), (25, 831264), (28, 742200), (30, 692720), (32, 649425), (35, 593760), (40, 519540), (42, 494800), (48, 432950), (50, 415632), (56, 371100), (60, 346360), (70, 296880), (75, 277088), (80, 259770), (84, 247400), (96, 216475), (100, 207816), (105, 197920), (112, 185550), (120, 173180), (140, 148440), (150, 138544), (160, 129885), (168, 123700), (175, 118752), (200, 103908), (210, 98960), (224, 92775), (240, 86590), (280, 74220), (300, 69272), (336, 61850), (350, 59376), (400, 51954), (420, 49480), (480, 43295), (525, 39584), (560, 37110), (600, 34636), (672, 30925), (700, 29688), (800, 25977), (840, 24740), (1050, 19792), (1120, 18555), (1200, 17318), (1237, 16800), (1400, 14844), (1680, 12370), (2100, 9896), (2400, 8659), (2474, 8400), (2800, 7422), (3360, 6185), (3711, 5600), (4200, 4948)]