19887840

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{1973}}^1$

素因数の和:2001

約数の個数: 144

約数和(自身を含む): 77601888

約数和(自身を除く): 57714048

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 1973, 2016, 2520, 3360, 3946, 5040, 5919, 7892, 9865, 10080, 11838, 13811, 15784, 17757, 19730, 23676, 27622, 29595, 31568, 35514, 39460, 41433, 47352, 55244, 59190, 63136, 69055, 71028, 78920, 82866, 88785, 94704, 110488, 118380, 124299, 138110, 142056, 157840, 165732, 177570, 189408, 207165, 220976, 236760, 248598, 276220, 284112, 315680, 331464, 355140, 414330, 441952, 473520, 497196, 552440, 568224, 621495, 662928, 710280, 828660, 947040, 994392, 1104880, 1242990, 1325856, 1420560, 1657320, 1988784, 2209760, 2485980, 2841120, 3314640, 3977568, 4971960, 6629280, 9943920, 19887840]

約数ペア:

[(1, 19887840), (2, 9943920), (3, 6629280), (4, 4971960), (5, 3977568), (6, 3314640), (7, 2841120), (8, 2485980), (9, 2209760), (10, 1988784), (12, 1657320), (14, 1420560), (15, 1325856), (16, 1242990), (18, 1104880), (20, 994392), (21, 947040), (24, 828660), (28, 710280), (30, 662928), (32, 621495), (35, 568224), (36, 552440), (40, 497196), (42, 473520), (45, 441952), (48, 414330), (56, 355140), (60, 331464), (63, 315680), (70, 284112), (72, 276220), (80, 248598), (84, 236760), (90, 220976), (96, 207165), (105, 189408), (112, 177570), (120, 165732), (126, 157840), (140, 142056), (144, 138110), (160, 124299), (168, 118380), (180, 110488), (210, 94704), (224, 88785), (240, 82866), (252, 78920), (280, 71028), (288, 69055), (315, 63136), (336, 59190), (360, 55244), (420, 47352), (480, 41433), (504, 39460), (560, 35514), (630, 31568), (672, 29595), (720, 27622), (840, 23676), (1008, 19730), (1120, 17757), (1260, 15784), (1440, 13811), (1680, 11838), (1973, 10080), (2016, 9865), (2520, 7892), (3360, 5919), (3946, 5040)]