20605428

素因数分解:

$2^2\times 3^5\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:108

約数の個数: 144

約数和(自身を含む): 60540480

約数和(自身を除く): 39935052

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 27, 29, 34, 36, 43, 51, 54, 58, 68, 81, 86, 87, 102, 108, 116, 129, 153, 162, 172, 174, 204, 243, 258, 261, 306, 324, 348, 387, 459, 486, 493, 516, 522, 612, 731, 774, 783, 918, 972, 986, 1044, 1161, 1247, 1377, 1462, 1479, 1548, 1566, 1836, 1972, 2193, 2322, 2349, 2494, 2754, 2924, 2958, 3132, 3483, 3741, 4131, 4386, 4437, 4644, 4698, 4988, 5508, 5916, 6579, 6966, 7047, 7482, 8262, 8772, 8874, 9396, 10449, 11223, 13158, 13311, 13932, 14094, 14964, 16524, 17748, 19737, 20898, 21199, 22446, 26316, 26622, 28188, 33669, 39474, 39933, 41796, 42398, 44892, 53244, 59211, 63597, 67338, 78948, 79866, 84796, 101007, 118422, 119799, 127194, 134676, 159732, 177633, 190791, 202014, 236844, 239598, 254388, 303021, 355266, 381582, 404028, 479196, 572373, 606042, 710532, 763164, 1144746, 1212084, 1717119, 2289492, 3434238, 5151357, 6868476, 10302714, 20605428]

約数ペア:

[(1, 20605428), (2, 10302714), (3, 6868476), (4, 5151357), (6, 3434238), (9, 2289492), (12, 1717119), (17, 1212084), (18, 1144746), (27, 763164), (29, 710532), (34, 606042), (36, 572373), (43, 479196), (51, 404028), (54, 381582), (58, 355266), (68, 303021), (81, 254388), (86, 239598), (87, 236844), (102, 202014), (108, 190791), (116, 177633), (129, 159732), (153, 134676), (162, 127194), (172, 119799), (174, 118422), (204, 101007), (243, 84796), (258, 79866), (261, 78948), (306, 67338), (324, 63597), (348, 59211), (387, 53244), (459, 44892), (486, 42398), (493, 41796), (516, 39933), (522, 39474), (612, 33669), (731, 28188), (774, 26622), (783, 26316), (918, 22446), (972, 21199), (986, 20898), (1044, 19737), (1161, 17748), (1247, 16524), (1377, 14964), (1462, 14094), (1479, 13932), (1548, 13311), (1566, 13158), (1836, 11223), (1972, 10449), (2193, 9396), (2322, 8874), (2349, 8772), (2494, 8262), (2754, 7482), (2924, 7047), (2958, 6966), (3132, 6579), (3483, 5916), (3741, 5508), (4131, 4988), (4386, 4698), (4437, 4644)]