20138880

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{617}}^1$

素因数の和:656

約数の個数: 128

約数和(自身を含む): 68078880

約数和(自身を除く): 47940000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 128, 136, 160, 170, 192, 204, 240, 255, 272, 320, 340, 384, 408, 480, 510, 544, 617, 640, 680, 816, 960, 1020, 1088, 1234, 1360, 1632, 1851, 1920, 2040, 2176, 2468, 2720, 3085, 3264, 3702, 4080, 4936, 5440, 6170, 6528, 7404, 8160, 9255, 9872, 10489, 10880, 12340, 14808, 16320, 18510, 19744, 20978, 24680, 29616, 31467, 32640, 37020, 39488, 41956, 49360, 52445, 59232, 62934, 74040, 78976, 83912, 98720, 104890, 118464, 125868, 148080, 157335, 167824, 197440, 209780, 236928, 251736, 296160, 314670, 335648, 394880, 419560, 503472, 592320, 629340, 671296, 839120, 1006944, 1184640, 1258680, 1342592, 1678240, 2013888, 2517360, 3356480, 4027776, 5034720, 6712960, 10069440, 20138880]

約数ペア:

[(1, 20138880), (2, 10069440), (3, 6712960), (4, 5034720), (5, 4027776), (6, 3356480), (8, 2517360), (10, 2013888), (12, 1678240), (15, 1342592), (16, 1258680), (17, 1184640), (20, 1006944), (24, 839120), (30, 671296), (32, 629340), (34, 592320), (40, 503472), (48, 419560), (51, 394880), (60, 335648), (64, 314670), (68, 296160), (80, 251736), (85, 236928), (96, 209780), (102, 197440), (120, 167824), (128, 157335), (136, 148080), (160, 125868), (170, 118464), (192, 104890), (204, 98720), (240, 83912), (255, 78976), (272, 74040), (320, 62934), (340, 59232), (384, 52445), (408, 49360), (480, 41956), (510, 39488), (544, 37020), (617, 32640), (640, 31467), (680, 29616), (816, 24680), (960, 20978), (1020, 19744), (1088, 18510), (1234, 16320), (1360, 14808), (1632, 12340), (1851, 10880), (1920, 10489), (2040, 9872), (2176, 9255), (2468, 8160), (2720, 7404), (3085, 6528), (3264, 6170), (3702, 5440), (4080, 4936)]