20720640

素因数分解:

$2^{10}\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:118

約数の個数: 176

約数和(自身を含む): 70744320

約数和(自身を除く): 50023680

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, 71, 76, 80, 95, 96, 114, 120, 128, 142, 152, 160, 190, 192, 213, 228, 240, 256, 284, 285, 304, 320, 355, 380, 384, 426, 456, 480, 512, 568, 570, 608, 640, 710, 760, 768, 852, 912, 960, 1024, 1065, 1136, 1140, 1216, 1280, 1349, 1420, 1520, 1536, 1704, 1824, 1920, 2130, 2272, 2280, 2432, 2560, 2698, 2840, 3040, 3072, 3408, 3648, 3840, 4047, 4260, 4544, 4560, 4864, 5120, 5396, 5680, 6080, 6745, 6816, 7296, 7680, 8094, 8520, 9088, 9120, 9728, 10792, 11360, 12160, 13490, 13632, 14592, 15360, 16188, 17040, 18176, 18240, 19456, 20235, 21584, 22720, 24320, 26980, 27264, 29184, 32376, 34080, 36352, 36480, 40470, 43168, 45440, 48640, 53960, 54528, 58368, 64752, 68160, 72704, 72960, 80940, 86336, 90880, 97280, 107920, 109056, 129504, 136320, 145920, 161880, 172672, 181760, 215840, 218112, 259008, 272640, 291840, 323760, 345344, 363520, 431680, 518016, 545280, 647520, 690688, 863360, 1036032, 1090560, 1295040, 1381376, 1726720, 2072064, 2590080, 3453440, 4144128, 5180160, 6906880, 10360320, 20720640]

約数ペア:

[(1, 20720640), (2, 10360320), (3, 6906880), (4, 5180160), (5, 4144128), (6, 3453440), (8, 2590080), (10, 2072064), (12, 1726720), (15, 1381376), (16, 1295040), (19, 1090560), (20, 1036032), (24, 863360), (30, 690688), (32, 647520), (38, 545280), (40, 518016), (48, 431680), (57, 363520), (60, 345344), (64, 323760), (71, 291840), (76, 272640), (80, 259008), (95, 218112), (96, 215840), (114, 181760), (120, 172672), (128, 161880), (142, 145920), (152, 136320), (160, 129504), (190, 109056), (192, 107920), (213, 97280), (228, 90880), (240, 86336), (256, 80940), (284, 72960), (285, 72704), (304, 68160), (320, 64752), (355, 58368), (380, 54528), (384, 53960), (426, 48640), (456, 45440), (480, 43168), (512, 40470), (568, 36480), (570, 36352), (608, 34080), (640, 32376), (710, 29184), (760, 27264), (768, 26980), (852, 24320), (912, 22720), (960, 21584), (1024, 20235), (1065, 19456), (1136, 18240), (1140, 18176), (1216, 17040), (1280, 16188), (1349, 15360), (1420, 14592), (1520, 13632), (1536, 13490), (1704, 12160), (1824, 11360), (1920, 10792), (2130, 9728), (2272, 9120), (2280, 9088), (2432, 8520), (2560, 8094), (2698, 7680), (2840, 7296), (3040, 6816), (3072, 6745), (3408, 6080), (3648, 5680), (3840, 5396), (4047, 5120), (4260, 4864), (4544, 4560)]