28660725

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 72

約数和(自身を含む): 55710720

約数和(自身を除く): 27049995

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 59, 75, 85, 127, 153, 177, 225, 255, 295, 381, 425, 531, 635, 765, 885, 1003, 1143, 1275, 1475, 1905, 2159, 2655, 3009, 3175, 3825, 4425, 5015, 5715, 6477, 7493, 9027, 9525, 10795, 13275, 15045, 19431, 22479, 25075, 28575, 32385, 37465, 45135, 53975, 67437, 75225, 97155, 112395, 127381, 161925, 187325, 225675, 337185, 382143, 485775, 561975, 636905, 1146429, 1685925, 1910715, 3184525, 5732145, 9553575, 28660725]

約数ペア:

[(1, 28660725), (3, 9553575), (5, 5732145), (9, 3184525), (15, 1910715), (17, 1685925), (25, 1146429), (45, 636905), (51, 561975), (59, 485775), (75, 382143), (85, 337185), (127, 225675), (153, 187325), (177, 161925), (225, 127381), (255, 112395), (295, 97155), (381, 75225), (425, 67437), (531, 53975), (635, 45135), (765, 37465), (885, 32385), (1003, 28575), (1143, 25075), (1275, 22479), (1475, 19431), (1905, 15045), (2159, 13275), (2655, 10795), (3009, 9525), (3175, 9027), (3825, 7493), (4425, 6477), (5015, 5715)]