51542725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 76870080

約数和(自身を除く): 25327355

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 323, 325, 425, 475, 491, 1105, 1235, 1615, 2455, 4199, 5525, 6175, 6383, 8075, 8347, 9329, 12275, 20995, 31915, 41735, 46645, 104975, 108511, 121277, 158593, 159575, 208675, 233225, 542555, 606385, 792965, 2061709, 2712775, 3031925, 3964825, 10308545, 51542725]

約数ペア:

[(1, 51542725), (5, 10308545), (13, 3964825), (17, 3031925), (19, 2712775), (25, 2061709), (65, 792965), (85, 606385), (95, 542555), (221, 233225), (247, 208675), (323, 159575), (325, 158593), (425, 121277), (475, 108511), (491, 104975), (1105, 46645), (1235, 41735), (1615, 31915), (2455, 20995), (4199, 12275), (5525, 9329), (6175, 8347), (6383, 8075)]