1908979840

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1110

約数の個数: 128

約数和(自身を含む): 4740405120

約数和(自身を除く): 2831425280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 71, 80, 86, 128, 142, 160, 172, 215, 284, 320, 344, 355, 430, 568, 640, 688, 710, 860, 977, 1136, 1376, 1420, 1720, 1954, 2272, 2752, 2840, 3053, 3440, 3908, 4544, 4885, 5504, 5680, 6106, 6880, 7816, 9088, 9770, 11360, 12212, 13760, 15265, 15632, 19540, 22720, 24424, 27520, 30530, 31264, 39080, 42011, 45440, 48848, 61060, 62528, 69367, 78160, 84022, 97696, 122120, 125056, 138734, 156320, 168044, 195392, 210055, 244240, 277468, 312640, 336088, 346835, 390784, 420110, 488480, 554936, 625280, 672176, 693670, 840220, 976960, 1109872, 1344352, 1387340, 1680440, 1953920, 2219744, 2688704, 2774680, 2982781, 3360880, 4439488, 5377408, 5549360, 5965562, 6721760, 8878976, 11098720, 11931124, 13443520, 14913905, 22197440, 23862248, 26887040, 29827810, 44394880, 47724496, 59655620, 95448992, 119311240, 190897984, 238622480, 381795968, 477244960, 954489920, 1908979840]

約数ペア:

[(1, 1908979840), (2, 954489920), (4, 477244960), (5, 381795968), (8, 238622480), (10, 190897984), (16, 119311240), (20, 95448992), (32, 59655620), (40, 47724496), (43, 44394880), (64, 29827810), (71, 26887040), (80, 23862248), (86, 22197440), (128, 14913905), (142, 13443520), (160, 11931124), (172, 11098720), (215, 8878976), (284, 6721760), (320, 5965562), (344, 5549360), (355, 5377408), (430, 4439488), (568, 3360880), (640, 2982781), (688, 2774680), (710, 2688704), (860, 2219744), (977, 1953920), (1136, 1680440), (1376, 1387340), (1420, 1344352), (1720, 1109872), (1954, 976960), (2272, 840220), (2752, 693670), (2840, 672176), (3053, 625280), (3440, 554936), (3908, 488480), (4544, 420110), (4885, 390784), (5504, 346835), (5680, 336088), (6106, 312640), (6880, 277468), (7816, 244240), (9088, 210055), (9770, 195392), (11360, 168044), (12212, 156320), (13760, 138734), (15265, 125056), (15632, 122120), (19540, 97696), (22720, 84022), (24424, 78160), (27520, 69367), (30530, 62528), (31264, 61060), (39080, 48848), (42011, 45440)]