18400785

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{479}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 13532655

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 197, 479, 591, 985, 1437, 2395, 2561, 2955, 6227, 7185, 7683, 12805, 18681, 31135, 38415, 93405, 94363, 283089, 471815, 1226719, 1415445, 3680157, 6133595, 18400785]

約数ペア:

[(1, 18400785), (3, 6133595), (5, 3680157), (13, 1415445), (15, 1226719), (39, 471815), (65, 283089), (195, 94363), (197, 93405), (479, 38415), (591, 31135), (985, 18681), (1437, 12805), (2395, 7683), (2561, 7185), (2955, 6227)]