20007725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{263}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 26516160

約数和(自身を除く): 6508435

約数列:

[1, 5, 17, 25, 85, 179, 263, 425, 895, 1315, 3043, 4471, 4475, 6575, 15215, 22355, 47077, 76075, 111775, 235385, 800309, 1176925, 4001545, 20007725]

約数ペア:

[(1, 20007725), (5, 4001545), (17, 1176925), (25, 800309), (85, 235385), (179, 111775), (263, 76075), (425, 47077), (895, 22355), (1315, 15215), (3043, 6575), (4471, 4475)]