12918440

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2543}}^1$

素因数の和:2681

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 16388440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 2543, 5080, 5086, 10172, 12715, 20344, 25430, 50860, 101720, 322961, 645922, 1291844, 1614805, 2583688, 3229610, 6459220, 12918440]

約数ペア:

[(1, 12918440), (2, 6459220), (4, 3229610), (5, 2583688), (8, 1614805), (10, 1291844), (20, 645922), (40, 322961), (127, 101720), (254, 50860), (508, 25430), (635, 20344), (1016, 12715), (1270, 10172), (2540, 5086), (2543, 5080)]