28205712

素因数分解:

$2^4\times 3^3\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:725

約数の個数: 80

約数和(自身を含む): 81840000

約数和(自身を除く): 53634288

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 109, 144, 216, 218, 327, 432, 436, 599, 654, 872, 981, 1198, 1308, 1744, 1797, 1962, 2396, 2616, 2943, 3594, 3924, 4792, 5232, 5391, 5886, 7188, 7848, 9584, 10782, 11772, 14376, 15696, 16173, 21564, 23544, 28752, 32346, 43128, 47088, 64692, 65291, 86256, 129384, 130582, 195873, 258768, 261164, 391746, 522328, 587619, 783492, 1044656, 1175238, 1566984, 1762857, 2350476, 3133968, 3525714, 4700952, 7051428, 9401904, 14102856, 28205712]

約数ペア:

[(1, 28205712), (2, 14102856), (3, 9401904), (4, 7051428), (6, 4700952), (8, 3525714), (9, 3133968), (12, 2350476), (16, 1762857), (18, 1566984), (24, 1175238), (27, 1044656), (36, 783492), (48, 587619), (54, 522328), (72, 391746), (108, 261164), (109, 258768), (144, 195873), (216, 130582), (218, 129384), (327, 86256), (432, 65291), (436, 64692), (599, 47088), (654, 43128), (872, 32346), (981, 28752), (1198, 23544), (1308, 21564), (1744, 16173), (1797, 15696), (1962, 14376), (2396, 11772), (2616, 10782), (2943, 9584), (3594, 7848), (3924, 7188), (4792, 5886), (5232, 5391)]