2173340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{643}}^1$

素因数の和:678

約数の個数: 36

約数和(自身を含む): 4949784

約数和(自身を除く): 2776444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 643, 676, 845, 1286, 1690, 2572, 3215, 3380, 6430, 8359, 12860, 16718, 33436, 41795, 83590, 108667, 167180, 217334, 434668, 543335, 1086670, 2173340]

約数ペア:

[(1, 2173340), (2, 1086670), (4, 543335), (5, 434668), (10, 217334), (13, 167180), (20, 108667), (26, 83590), (52, 41795), (65, 33436), (130, 16718), (169, 12860), (260, 8359), (338, 6430), (643, 3380), (676, 3215), (845, 2572), (1286, 1690)]