45678920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:255

約数の個数: 128

約数和(自身を含む): 126282240

約数和(自身を除く): 80603320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 41, 46, 56, 70, 82, 92, 115, 140, 161, 164, 173, 184, 205, 230, 280, 287, 322, 328, 346, 410, 460, 574, 644, 692, 805, 820, 865, 920, 943, 1148, 1211, 1288, 1384, 1435, 1610, 1640, 1730, 1886, 2296, 2422, 2870, 3220, 3460, 3772, 3979, 4715, 4844, 5740, 6055, 6440, 6601, 6920, 7093, 7544, 7958, 9430, 9688, 11480, 12110, 13202, 14186, 15916, 18860, 19895, 24220, 26404, 27853, 28372, 31832, 33005, 35465, 37720, 39790, 48440, 49651, 52808, 55706, 56744, 66010, 70930, 79580, 99302, 111412, 132020, 139265, 141860, 159160, 163139, 198604, 222824, 248255, 264040, 278530, 283720, 326278, 397208, 496510, 557060, 652556, 815695, 993020, 1114120, 1141973, 1305112, 1631390, 1986040, 2283946, 3262780, 4567892, 5709865, 6525560, 9135784, 11419730, 22839460, 45678920]

約数ペア:

[(1, 45678920), (2, 22839460), (4, 11419730), (5, 9135784), (7, 6525560), (8, 5709865), (10, 4567892), (14, 3262780), (20, 2283946), (23, 1986040), (28, 1631390), (35, 1305112), (40, 1141973), (41, 1114120), (46, 993020), (56, 815695), (70, 652556), (82, 557060), (92, 496510), (115, 397208), (140, 326278), (161, 283720), (164, 278530), (173, 264040), (184, 248255), (205, 222824), (230, 198604), (280, 163139), (287, 159160), (322, 141860), (328, 139265), (346, 132020), (410, 111412), (460, 99302), (574, 79580), (644, 70930), (692, 66010), (805, 56744), (820, 55706), (865, 52808), (920, 49651), (943, 48440), (1148, 39790), (1211, 37720), (1288, 35465), (1384, 33005), (1435, 31832), (1610, 28372), (1640, 27853), (1730, 26404), (1886, 24220), (2296, 19895), (2422, 18860), (2870, 15916), (3220, 14186), (3460, 13202), (3772, 12110), (3979, 11480), (4715, 9688), (4844, 9430), (5740, 7958), (6055, 7544), (6440, 7093), (6601, 6920)]