28511145

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 56182464

約数和(自身を除く): 27671319

約数列:

[1, 3, 5, 9, 13, 15, 23, 39, 45, 65, 69, 115, 117, 163, 169, 195, 207, 299, 345, 489, 507, 585, 815, 845, 897, 1035, 1467, 1495, 1521, 2119, 2445, 2535, 2691, 3749, 3887, 4485, 6357, 7335, 7605, 10595, 11247, 11661, 13455, 18745, 19071, 19435, 27547, 31785, 33741, 34983, 48737, 56235, 58305, 82641, 95355, 137735, 146211, 168705, 174915, 243685, 247923, 413205, 438633, 633581, 731055, 1239615, 1900743, 2193165, 3167905, 5702229, 9503715, 28511145]

約数ペア:

[(1, 28511145), (3, 9503715), (5, 5702229), (9, 3167905), (13, 2193165), (15, 1900743), (23, 1239615), (39, 731055), (45, 633581), (65, 438633), (69, 413205), (115, 247923), (117, 243685), (163, 174915), (169, 168705), (195, 146211), (207, 137735), (299, 95355), (345, 82641), (489, 58305), (507, 56235), (585, 48737), (815, 34983), (845, 33741), (897, 31785), (1035, 27547), (1467, 19435), (1495, 19071), (1521, 18745), (2119, 13455), (2445, 11661), (2535, 11247), (2691, 10595), (3749, 7605), (3887, 7335), (4485, 6357)]