178139710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{491}}^1$

素因数の和:649

約数の個数: 64

約数和(自身を含む): 377478144

約数和(自身を除く): 199338434

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 73, 142, 146, 355, 365, 491, 497, 511, 710, 730, 982, 994, 1022, 2455, 2485, 2555, 3437, 4910, 4970, 5110, 5183, 6874, 10366, 17185, 25915, 34370, 34861, 35843, 36281, 51830, 69722, 71686, 72562, 174305, 179215, 181405, 244027, 250901, 348610, 358430, 362810, 488054, 501802, 1220135, 1254505, 2440270, 2509010, 2544853, 5089706, 12724265, 17813971, 25448530, 35627942, 89069855, 178139710]

約数ペア:

[(1, 178139710), (2, 89069855), (5, 35627942), (7, 25448530), (10, 17813971), (14, 12724265), (35, 5089706), (70, 2544853), (71, 2509010), (73, 2440270), (142, 1254505), (146, 1220135), (355, 501802), (365, 488054), (491, 362810), (497, 358430), (511, 348610), (710, 250901), (730, 244027), (982, 181405), (994, 179215), (1022, 174305), (2455, 72562), (2485, 71686), (2555, 69722), (3437, 51830), (4910, 36281), (4970, 35843), (5110, 34861), (5183, 34370), (6874, 25915), (10366, 17185)]