18013775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1289}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 24633840

約数和(自身を除く): 6620065

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 1289, 2795, 6445, 13975, 16757, 32225, 55427, 83785, 277135, 418925, 720551, 1385675, 3602755, 18013775]

約数ペア:

[(1, 18013775), (5, 3602755), (13, 1385675), (25, 720551), (43, 418925), (65, 277135), (215, 83785), (325, 55427), (559, 32225), (1075, 16757), (1289, 13975), (2795, 6445)]