12996490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:666

約数の個数: 32

約数和(自身を含む): 25356240

約数和(自身を除く): 12359750

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 257, 389, 514, 778, 1285, 1945, 2570, 3341, 3890, 5057, 6682, 10114, 16705, 25285, 33410, 50570, 99973, 199946, 499865, 999730, 1299649, 2599298, 6498245, 12996490]

約数ペア:

[(1, 12996490), (2, 6498245), (5, 2599298), (10, 1299649), (13, 999730), (26, 499865), (65, 199946), (130, 99973), (257, 50570), (389, 33410), (514, 25285), (778, 16705), (1285, 10114), (1945, 6682), (2570, 5057), (3341, 3890)]