21851520

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{599}}^1$

素因数の和:640

約数の個数: 128

約数和(自身を含む): 73440000

約数和(自身を除く): 51588480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 240, 285, 304, 320, 380, 384, 456, 480, 570, 599, 608, 640, 760, 912, 960, 1140, 1198, 1216, 1520, 1797, 1824, 1920, 2280, 2396, 2432, 2995, 3040, 3594, 3648, 4560, 4792, 5990, 6080, 7188, 7296, 8985, 9120, 9584, 11381, 11980, 12160, 14376, 17970, 18240, 19168, 22762, 23960, 28752, 34143, 35940, 36480, 38336, 45524, 47920, 56905, 57504, 68286, 71880, 76672, 91048, 95840, 113810, 115008, 136572, 143760, 170715, 182096, 191680, 227620, 230016, 273144, 287520, 341430, 364192, 383360, 455240, 546288, 575040, 682860, 728384, 910480, 1092576, 1150080, 1365720, 1456768, 1820960, 2185152, 2731440, 3641920, 4370304, 5462880, 7283840, 10925760, 21851520]

約数ペア:

[(1, 21851520), (2, 10925760), (3, 7283840), (4, 5462880), (5, 4370304), (6, 3641920), (8, 2731440), (10, 2185152), (12, 1820960), (15, 1456768), (16, 1365720), (19, 1150080), (20, 1092576), (24, 910480), (30, 728384), (32, 682860), (38, 575040), (40, 546288), (48, 455240), (57, 383360), (60, 364192), (64, 341430), (76, 287520), (80, 273144), (95, 230016), (96, 227620), (114, 191680), (120, 182096), (128, 170715), (152, 143760), (160, 136572), (190, 115008), (192, 113810), (228, 95840), (240, 91048), (285, 76672), (304, 71880), (320, 68286), (380, 57504), (384, 56905), (456, 47920), (480, 45524), (570, 38336), (599, 36480), (608, 35940), (640, 34143), (760, 28752), (912, 23960), (960, 22762), (1140, 19168), (1198, 18240), (1216, 17970), (1520, 14376), (1797, 12160), (1824, 11980), (1920, 11381), (2280, 9584), (2396, 9120), (2432, 8985), (2995, 7296), (3040, 7188), (3594, 6080), (3648, 5990), (4560, 4792)]