1321709320

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{260179}}^1$

素因数の和:260317

約数の個数: 32

約数和(自身を含む): 2997273600

約数和(自身を除く): 1675564280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 260179, 520358, 1040716, 1300895, 2081432, 2601790, 5203580, 10407160, 33042733, 66085466, 132170932, 165213665, 264341864, 330427330, 660854660, 1321709320]

約数ペア:

[(1, 1321709320), (2, 660854660), (4, 330427330), (5, 264341864), (8, 165213665), (10, 132170932), (20, 66085466), (40, 33042733), (127, 10407160), (254, 5203580), (508, 2601790), (635, 2081432), (1016, 1300895), (1270, 1040716), (2540, 520358), (5080, 260179)]