19979760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:175

約数の個数: 160

約数和(自身を含む): 67495680

約数和(自身を除く): 47515920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 59, 60, 68, 80, 83, 85, 102, 118, 120, 136, 166, 170, 177, 204, 236, 240, 249, 255, 272, 295, 332, 340, 354, 408, 415, 472, 498, 510, 590, 664, 680, 708, 816, 830, 885, 944, 996, 1003, 1020, 1180, 1245, 1328, 1360, 1411, 1416, 1660, 1770, 1992, 2006, 2040, 2360, 2490, 2822, 2832, 3009, 3320, 3540, 3984, 4012, 4080, 4233, 4720, 4897, 4980, 5015, 5644, 6018, 6640, 7055, 7080, 8024, 8466, 9794, 9960, 10030, 11288, 12036, 14110, 14160, 14691, 15045, 16048, 16932, 19588, 19920, 20060, 21165, 22576, 24072, 24485, 28220, 29382, 30090, 33864, 39176, 40120, 42330, 48144, 48970, 56440, 58764, 60180, 67728, 73455, 78352, 80240, 83249, 84660, 97940, 112880, 117528, 120360, 146910, 166498, 169320, 195880, 235056, 240720, 249747, 293820, 332996, 338640, 391760, 416245, 499494, 587640, 665992, 832490, 998988, 1175280, 1248735, 1331984, 1664980, 1997976, 2497470, 3329960, 3995952, 4994940, 6659920, 9989880, 19979760]

約数ペア:

[(1, 19979760), (2, 9989880), (3, 6659920), (4, 4994940), (5, 3995952), (6, 3329960), (8, 2497470), (10, 1997976), (12, 1664980), (15, 1331984), (16, 1248735), (17, 1175280), (20, 998988), (24, 832490), (30, 665992), (34, 587640), (40, 499494), (48, 416245), (51, 391760), (59, 338640), (60, 332996), (68, 293820), (80, 249747), (83, 240720), (85, 235056), (102, 195880), (118, 169320), (120, 166498), (136, 146910), (166, 120360), (170, 117528), (177, 112880), (204, 97940), (236, 84660), (240, 83249), (249, 80240), (255, 78352), (272, 73455), (295, 67728), (332, 60180), (340, 58764), (354, 56440), (408, 48970), (415, 48144), (472, 42330), (498, 40120), (510, 39176), (590, 33864), (664, 30090), (680, 29382), (708, 28220), (816, 24485), (830, 24072), (885, 22576), (944, 21165), (996, 20060), (1003, 19920), (1020, 19588), (1180, 16932), (1245, 16048), (1328, 15045), (1360, 14691), (1411, 14160), (1416, 14110), (1660, 12036), (1770, 11288), (1992, 10030), (2006, 9960), (2040, 9794), (2360, 8466), (2490, 8024), (2822, 7080), (2832, 7055), (3009, 6640), (3320, 6018), (3540, 5644), (3984, 5015), (4012, 4980), (4080, 4897), (4233, 4720)]