12145820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 27306720

約数和(自身を除く): 15160900

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 139, 170, 257, 278, 340, 514, 556, 695, 1028, 1285, 1390, 2363, 2570, 2780, 4369, 4726, 5140, 8738, 9452, 11815, 17476, 21845, 23630, 35723, 43690, 47260, 71446, 87380, 142892, 178615, 357230, 607291, 714460, 1214582, 2429164, 3036455, 6072910, 12145820]

約数ペア:

[(1, 12145820), (2, 6072910), (4, 3036455), (5, 2429164), (10, 1214582), (17, 714460), (20, 607291), (34, 357230), (68, 178615), (85, 142892), (139, 87380), (170, 71446), (257, 47260), (278, 43690), (340, 35723), (514, 23630), (556, 21845), (695, 17476), (1028, 11815), (1285, 9452), (1390, 8738), (2363, 5140), (2570, 4726), (2780, 4369)]