213223075

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:608

約数の個数: 36

約数和(自身を含む): 289549920

約数和(自身を除く): 76326845

約数列:

[1, 5, 13, 25, 65, 109, 169, 325, 463, 545, 845, 1417, 2315, 2725, 4225, 6019, 7085, 11575, 18421, 30095, 35425, 50467, 78247, 92105, 150475, 252335, 391235, 460525, 656071, 1261675, 1956175, 3280355, 8528923, 16401775, 42644615, 213223075]

約数ペア:

[(1, 213223075), (5, 42644615), (13, 16401775), (25, 8528923), (65, 3280355), (109, 1956175), (169, 1261675), (325, 656071), (463, 460525), (545, 391235), (845, 252335), (1417, 150475), (2315, 92105), (2725, 78247), (4225, 50467), (6019, 35425), (7085, 30095), (11575, 18421)]