19999680

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:354

約数の個数: 112

約数和(自身を含む): 64520064

約数和(自身を除く): 44520384

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 83, 96, 120, 160, 166, 192, 240, 249, 251, 320, 332, 415, 480, 498, 502, 664, 753, 830, 960, 996, 1004, 1245, 1255, 1328, 1506, 1660, 1992, 2008, 2490, 2510, 2656, 3012, 3320, 3765, 3984, 4016, 4980, 5020, 5312, 6024, 6640, 7530, 7968, 8032, 9960, 10040, 12048, 13280, 15060, 15936, 16064, 19920, 20080, 20833, 24096, 26560, 30120, 39840, 40160, 41666, 48192, 60240, 62499, 79680, 80320, 83332, 104165, 120480, 124998, 166664, 208330, 240960, 249996, 312495, 333328, 416660, 499992, 624990, 666656, 833320, 999984, 1249980, 1333312, 1666640, 1999968, 2499960, 3333280, 3999936, 4999920, 6666560, 9999840, 19999680]

約数ペア:

[(1, 19999680), (2, 9999840), (3, 6666560), (4, 4999920), (5, 3999936), (6, 3333280), (8, 2499960), (10, 1999968), (12, 1666640), (15, 1333312), (16, 1249980), (20, 999984), (24, 833320), (30, 666656), (32, 624990), (40, 499992), (48, 416660), (60, 333328), (64, 312495), (80, 249996), (83, 240960), (96, 208330), (120, 166664), (160, 124998), (166, 120480), (192, 104165), (240, 83332), (249, 80320), (251, 79680), (320, 62499), (332, 60240), (415, 48192), (480, 41666), (498, 40160), (502, 39840), (664, 30120), (753, 26560), (830, 24096), (960, 20833), (996, 20080), (1004, 19920), (1245, 16064), (1255, 15936), (1328, 15060), (1506, 13280), (1660, 12048), (1992, 10040), (2008, 9960), (2490, 8032), (2510, 7968), (2656, 7530), (3012, 6640), (3320, 6024), (3765, 5312), (3984, 5020), (4016, 4980)]