393648640

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1997}}^1$

素因数の和:2038

約数の個数: 160

約数和(自身を含む): 1177317504

約数和(自身を除く): 783668864

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 128, 140, 154, 160, 176, 220, 224, 256, 280, 308, 320, 352, 385, 440, 448, 512, 560, 616, 640, 704, 770, 880, 896, 1120, 1232, 1280, 1408, 1540, 1760, 1792, 1997, 2240, 2464, 2560, 2816, 3080, 3520, 3584, 3994, 4480, 4928, 5632, 6160, 7040, 7988, 8960, 9856, 9985, 12320, 13979, 14080, 15976, 17920, 19712, 19970, 21967, 24640, 27958, 28160, 31952, 39424, 39940, 43934, 49280, 55916, 63904, 69895, 79880, 87868, 98560, 109835, 111832, 127808, 139790, 153769, 159760, 175736, 197120, 219670, 223664, 255616, 279580, 307538, 319520, 351472, 439340, 447328, 511232, 559160, 615076, 639040, 702944, 768845, 878680, 894656, 1022464, 1118320, 1230152, 1278080, 1405888, 1537690, 1757360, 1789312, 2236640, 2460304, 2556160, 2811776, 3075380, 3514720, 3578624, 4473280, 4920608, 5112320, 5623552, 6150760, 7029440, 7157248, 8946560, 9841216, 11247104, 12301520, 14058880, 17893120, 19682432, 24603040, 28117760, 35786240, 39364864, 49206080, 56235520, 78729728, 98412160, 196824320, 393648640]

約数ペア:

[(1, 393648640), (2, 196824320), (4, 98412160), (5, 78729728), (7, 56235520), (8, 49206080), (10, 39364864), (11, 35786240), (14, 28117760), (16, 24603040), (20, 19682432), (22, 17893120), (28, 14058880), (32, 12301520), (35, 11247104), (40, 9841216), (44, 8946560), (55, 7157248), (56, 7029440), (64, 6150760), (70, 5623552), (77, 5112320), (80, 4920608), (88, 4473280), (110, 3578624), (112, 3514720), (128, 3075380), (140, 2811776), (154, 2556160), (160, 2460304), (176, 2236640), (220, 1789312), (224, 1757360), (256, 1537690), (280, 1405888), (308, 1278080), (320, 1230152), (352, 1118320), (385, 1022464), (440, 894656), (448, 878680), (512, 768845), (560, 702944), (616, 639040), (640, 615076), (704, 559160), (770, 511232), (880, 447328), (896, 439340), (1120, 351472), (1232, 319520), (1280, 307538), (1408, 279580), (1540, 255616), (1760, 223664), (1792, 219670), (1997, 197120), (2240, 175736), (2464, 159760), (2560, 153769), (2816, 139790), (3080, 127808), (3520, 111832), (3584, 109835), (3994, 98560), (4480, 87868), (4928, 79880), (5632, 69895), (6160, 63904), (7040, 55916), (7988, 49280), (8960, 43934), (9856, 39940), (9985, 39424), (12320, 31952), (13979, 28160), (14080, 27958), (15976, 24640), (17920, 21967), (19712, 19970)]