81101440

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:490

約数の個数: 128

約数和(自身を含む): 227272320

約数和(自身を除く): 146170880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 56, 64, 70, 80, 86, 112, 128, 140, 160, 172, 215, 224, 280, 301, 320, 344, 421, 430, 448, 560, 602, 640, 688, 842, 860, 896, 1120, 1204, 1376, 1505, 1684, 1720, 2105, 2240, 2408, 2752, 2947, 3010, 3368, 3440, 4210, 4480, 4816, 5504, 5894, 6020, 6736, 6880, 8420, 9632, 11788, 12040, 13472, 13760, 14735, 16840, 18103, 19264, 23576, 24080, 26944, 27520, 29470, 33680, 36206, 38528, 47152, 48160, 53888, 58940, 67360, 72412, 90515, 94304, 96320, 117880, 126721, 134720, 144824, 181030, 188608, 192640, 235760, 253442, 269440, 289648, 362060, 377216, 471520, 506884, 579296, 633605, 724120, 943040, 1013768, 1158592, 1267210, 1448240, 1886080, 2027536, 2317184, 2534420, 2896480, 4055072, 5068840, 5792960, 8110144, 10137680, 11585920, 16220288, 20275360, 40550720, 81101440]

約数ペア:

[(1, 81101440), (2, 40550720), (4, 20275360), (5, 16220288), (7, 11585920), (8, 10137680), (10, 8110144), (14, 5792960), (16, 5068840), (20, 4055072), (28, 2896480), (32, 2534420), (35, 2317184), (40, 2027536), (43, 1886080), (56, 1448240), (64, 1267210), (70, 1158592), (80, 1013768), (86, 943040), (112, 724120), (128, 633605), (140, 579296), (160, 506884), (172, 471520), (215, 377216), (224, 362060), (280, 289648), (301, 269440), (320, 253442), (344, 235760), (421, 192640), (430, 188608), (448, 181030), (560, 144824), (602, 134720), (640, 126721), (688, 117880), (842, 96320), (860, 94304), (896, 90515), (1120, 72412), (1204, 67360), (1376, 58940), (1505, 53888), (1684, 48160), (1720, 47152), (2105, 38528), (2240, 36206), (2408, 33680), (2752, 29470), (2947, 27520), (3010, 26944), (3368, 24080), (3440, 23576), (4210, 19264), (4480, 18103), (4816, 16840), (5504, 14735), (5894, 13760), (6020, 13472), (6736, 12040), (6880, 11788), (8420, 9632)]