211657225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1321}}^1$

素因数の和:1390

約数の個数: 48

約数和(自身を含む): 309823920

約数和(自身を除く): 98166695

約数列:

[1, 5, 13, 17, 25, 29, 65, 85, 145, 221, 325, 377, 425, 493, 725, 1105, 1321, 1885, 2465, 5525, 6409, 6605, 9425, 12325, 17173, 22457, 32045, 33025, 38309, 85865, 112285, 160225, 191545, 291941, 429325, 498017, 561425, 651253, 957725, 1459705, 2490085, 3256265, 7298525, 8466289, 12450425, 16281325, 42331445, 211657225]

約数ペア:

[(1, 211657225), (5, 42331445), (13, 16281325), (17, 12450425), (25, 8466289), (29, 7298525), (65, 3256265), (85, 2490085), (145, 1459705), (221, 957725), (325, 651253), (377, 561425), (425, 498017), (493, 429325), (725, 291941), (1105, 191545), (1321, 160225), (1885, 112285), (2465, 85865), (5525, 38309), (6409, 33025), (6605, 32045), (9425, 22457), (12325, 17173)]