61666409

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 74355840

約数和(自身を除く): 12689431

約数列:

[1, 7, 31, 89, 103, 217, 623, 721, 961, 2759, 3193, 6727, 9167, 19313, 22351, 64169, 85529, 98983, 284177, 598703, 692881, 1989239, 8809487, 61666409]

約数ペア:

[(1, 61666409), (7, 8809487), (31, 1989239), (89, 692881), (103, 598703), (217, 284177), (623, 98983), (721, 85529), (961, 64169), (2759, 22351), (3193, 19313), (6727, 9167)]