81809728

素因数分解:

$2^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1277}}^1$

素因数の和:1320

約数の個数: 112

約数和(自身を含む): 218139264

約数和(自身を除く): 136329536

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 52, 56, 64, 77, 88, 91, 104, 112, 143, 154, 176, 182, 208, 224, 286, 308, 352, 364, 416, 448, 572, 616, 704, 728, 832, 1001, 1144, 1232, 1277, 1456, 2002, 2288, 2464, 2554, 2912, 4004, 4576, 4928, 5108, 5824, 8008, 8939, 9152, 10216, 14047, 16016, 16601, 17878, 20432, 28094, 32032, 33202, 35756, 40864, 56188, 64064, 66404, 71512, 81728, 98329, 112376, 116207, 132808, 143024, 182611, 196658, 224752, 232414, 265616, 286048, 365222, 393316, 449504, 464828, 531232, 572096, 730444, 786632, 899008, 929656, 1062464, 1278277, 1460888, 1573264, 1859312, 2556554, 2921776, 3146528, 3718624, 5113108, 5843552, 6293056, 7437248, 10226216, 11687104, 20452432, 40904864, 81809728]

約数ペア:

[(1, 81809728), (2, 40904864), (4, 20452432), (7, 11687104), (8, 10226216), (11, 7437248), (13, 6293056), (14, 5843552), (16, 5113108), (22, 3718624), (26, 3146528), (28, 2921776), (32, 2556554), (44, 1859312), (52, 1573264), (56, 1460888), (64, 1278277), (77, 1062464), (88, 929656), (91, 899008), (104, 786632), (112, 730444), (143, 572096), (154, 531232), (176, 464828), (182, 449504), (208, 393316), (224, 365222), (286, 286048), (308, 265616), (352, 232414), (364, 224752), (416, 196658), (448, 182611), (572, 143024), (616, 132808), (704, 116207), (728, 112376), (832, 98329), (1001, 81728), (1144, 71512), (1232, 66404), (1277, 64064), (1456, 56188), (2002, 40864), (2288, 35756), (2464, 33202), (2554, 32032), (2912, 28094), (4004, 20432), (4576, 17878), (4928, 16601), (5108, 16016), (5824, 14047), (8008, 10216), (8939, 9152)]