66289340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{254959}}^1$

素因数の和:254981

約数の個数: 24

約数和(自身を含む): 149916480

約数和(自身を除く): 83627140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 254959, 509918, 1019836, 1274795, 2549590, 3314467, 5099180, 6628934, 13257868, 16572335, 33144670, 66289340]

約数ペア:

[(1, 66289340), (2, 33144670), (4, 16572335), (5, 13257868), (10, 6628934), (13, 5099180), (20, 3314467), (26, 2549590), (52, 1274795), (65, 1019836), (130, 509918), (260, 254959)]