18421305

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 34867584

約数和(自身を除く): 16446279

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 71, 105, 147, 213, 245, 353, 355, 497, 735, 1059, 1065, 1491, 1765, 2471, 2485, 3479, 5295, 7413, 7455, 10437, 12355, 17297, 17395, 25063, 37065, 51891, 52185, 75189, 86485, 125315, 175441, 259455, 375945, 526323, 877205, 1228087, 2631615, 3684261, 6140435, 18421305]

約数ペア:

[(1, 18421305), (3, 6140435), (5, 3684261), (7, 2631615), (15, 1228087), (21, 877205), (35, 526323), (49, 375945), (71, 259455), (105, 175441), (147, 125315), (213, 86485), (245, 75189), (353, 52185), (355, 51891), (497, 37065), (735, 25063), (1059, 17395), (1065, 17297), (1491, 12355), (1765, 10437), (2471, 7455), (2485, 7413), (3479, 5295)]