1389885520

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{349}}^1\times {\mathrm{743}}^1$

素因数の和:1172

約数の個数: 80

約数和(自身を含む): 3293539200

約数和(自身を除く): 1903653680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 349, 536, 670, 698, 743, 1072, 1340, 1396, 1486, 1745, 2680, 2792, 2972, 3490, 3715, 5360, 5584, 5944, 6980, 7430, 11888, 13960, 14860, 23383, 27920, 29720, 46766, 49781, 59440, 93532, 99562, 116915, 187064, 199124, 233830, 248905, 259307, 374128, 398248, 467660, 497810, 518614, 796496, 935320, 995620, 1037228, 1296535, 1870640, 1991240, 2074456, 2593070, 3982480, 4148912, 5186140, 10372280, 17373569, 20744560, 34747138, 69494276, 86867845, 138988552, 173735690, 277977104, 347471380, 694942760, 1389885520]

約数ペア:

[(1, 1389885520), (2, 694942760), (4, 347471380), (5, 277977104), (8, 173735690), (10, 138988552), (16, 86867845), (20, 69494276), (40, 34747138), (67, 20744560), (80, 17373569), (134, 10372280), (268, 5186140), (335, 4148912), (349, 3982480), (536, 2593070), (670, 2074456), (698, 1991240), (743, 1870640), (1072, 1296535), (1340, 1037228), (1396, 995620), (1486, 935320), (1745, 796496), (2680, 518614), (2792, 497810), (2972, 467660), (3490, 398248), (3715, 374128), (5360, 259307), (5584, 248905), (5944, 233830), (6980, 199124), (7430, 187064), (11888, 116915), (13960, 99562), (14860, 93532), (23383, 59440), (27920, 49781), (29720, 46766)]