20125280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1$

素因数の和:197

約数の個数: 144

約数和(自身を含む): 58949856

約数和(自身を除く): 38824576

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 151, 160, 170, 196, 224, 238, 245, 272, 280, 302, 340, 392, 476, 490, 544, 560, 595, 604, 680, 755, 784, 833, 952, 980, 1057, 1120, 1190, 1208, 1360, 1510, 1568, 1666, 1904, 1960, 2114, 2380, 2416, 2567, 2720, 3020, 3332, 3808, 3920, 4165, 4228, 4760, 4832, 5134, 5285, 6040, 6664, 7399, 7840, 8330, 8456, 9520, 10268, 10570, 12080, 12835, 13328, 14798, 16660, 16912, 17969, 19040, 20536, 21140, 24160, 25670, 26656, 29596, 33320, 33824, 35938, 36995, 41072, 42280, 51340, 59192, 66640, 71876, 73990, 82144, 84560, 89845, 102680, 118384, 125783, 133280, 143752, 147980, 169120, 179690, 205360, 236768, 251566, 287504, 295960, 359380, 410720, 503132, 575008, 591920, 628915, 718760, 1006264, 1183840, 1257830, 1437520, 2012528, 2515660, 2875040, 4025056, 5031320, 10062640, 20125280]

約数ペア:

[(1, 20125280), (2, 10062640), (4, 5031320), (5, 4025056), (7, 2875040), (8, 2515660), (10, 2012528), (14, 1437520), (16, 1257830), (17, 1183840), (20, 1006264), (28, 718760), (32, 628915), (34, 591920), (35, 575008), (40, 503132), (49, 410720), (56, 359380), (68, 295960), (70, 287504), (80, 251566), (85, 236768), (98, 205360), (112, 179690), (119, 169120), (136, 147980), (140, 143752), (151, 133280), (160, 125783), (170, 118384), (196, 102680), (224, 89845), (238, 84560), (245, 82144), (272, 73990), (280, 71876), (302, 66640), (340, 59192), (392, 51340), (476, 42280), (490, 41072), (544, 36995), (560, 35938), (595, 33824), (604, 33320), (680, 29596), (755, 26656), (784, 25670), (833, 24160), (952, 21140), (980, 20536), (1057, 19040), (1120, 17969), (1190, 16912), (1208, 16660), (1360, 14798), (1510, 13328), (1568, 12835), (1666, 12080), (1904, 10570), (1960, 10268), (2114, 9520), (2380, 8456), (2416, 8330), (2567, 7840), (2720, 7399), (3020, 6664), (3332, 6040), (3808, 5285), (3920, 5134), (4165, 4832), (4228, 4760)]