20151375

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 37065600

約数和(自身を除く): 16914225

約数列:

[1, 3, 5, 15, 17, 25, 29, 51, 75, 85, 87, 109, 125, 145, 255, 327, 375, 425, 435, 493, 545, 725, 1275, 1479, 1635, 1853, 2125, 2175, 2465, 2725, 3161, 3625, 5559, 6375, 7395, 8175, 9265, 9483, 10875, 12325, 13625, 15805, 27795, 36975, 40875, 46325, 47415, 53737, 61625, 79025, 138975, 161211, 184875, 231625, 237075, 268685, 395125, 694875, 806055, 1185375, 1343425, 4030275, 6717125, 20151375]

約数ペア:

[(1, 20151375), (3, 6717125), (5, 4030275), (15, 1343425), (17, 1185375), (25, 806055), (29, 694875), (51, 395125), (75, 268685), (85, 237075), (87, 231625), (109, 184875), (125, 161211), (145, 138975), (255, 79025), (327, 61625), (375, 53737), (425, 47415), (435, 46325), (493, 40875), (545, 36975), (725, 27795), (1275, 15805), (1479, 13625), (1635, 12325), (1853, 10875), (2125, 9483), (2175, 9265), (2465, 8175), (2725, 7395), (3161, 6375), (3625, 5559)]