205652020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{1213}}^1$

素因数の和:1409

約数の個数: 72

約数和(自身を含む): 505698984

約数和(自身を除く): 300046964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 173, 196, 245, 346, 490, 692, 865, 980, 1211, 1213, 1730, 2422, 2426, 3460, 4844, 4852, 6055, 6065, 8477, 8491, 12110, 12130, 16954, 16982, 24220, 24260, 33908, 33964, 42385, 42455, 59437, 84770, 84910, 118874, 169540, 169820, 209849, 237748, 297185, 419698, 594370, 839396, 1049245, 1188740, 1468943, 2098490, 2937886, 4196980, 5875772, 7344715, 10282601, 14689430, 20565202, 29378860, 41130404, 51413005, 102826010, 205652020]

約数ペア:

[(1, 205652020), (2, 102826010), (4, 51413005), (5, 41130404), (7, 29378860), (10, 20565202), (14, 14689430), (20, 10282601), (28, 7344715), (35, 5875772), (49, 4196980), (70, 2937886), (98, 2098490), (140, 1468943), (173, 1188740), (196, 1049245), (245, 839396), (346, 594370), (490, 419698), (692, 297185), (865, 237748), (980, 209849), (1211, 169820), (1213, 169540), (1730, 118874), (2422, 84910), (2426, 84770), (3460, 59437), (4844, 42455), (4852, 42385), (6055, 33964), (6065, 33908), (8477, 24260), (8491, 24220), (12110, 16982), (12130, 16954)]