81157648

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 187488000

約数和(自身を除く): 106330352

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 79, 88, 104, 143, 158, 176, 208, 286, 316, 449, 572, 632, 869, 898, 1027, 1144, 1264, 1738, 1796, 2054, 2288, 3476, 3592, 4108, 4939, 5837, 6952, 7184, 8216, 9878, 11297, 11674, 13904, 16432, 19756, 22594, 23348, 35471, 39512, 45188, 46696, 64207, 70942, 79024, 90376, 93392, 128414, 141884, 180752, 256828, 283768, 390181, 461123, 513656, 567536, 780362, 922246, 1027312, 1560724, 1844492, 3121448, 3688984, 5072353, 6242896, 7377968, 10144706, 20289412, 40578824, 81157648]

約数ペア:

[(1, 81157648), (2, 40578824), (4, 20289412), (8, 10144706), (11, 7377968), (13, 6242896), (16, 5072353), (22, 3688984), (26, 3121448), (44, 1844492), (52, 1560724), (79, 1027312), (88, 922246), (104, 780362), (143, 567536), (158, 513656), (176, 461123), (208, 390181), (286, 283768), (316, 256828), (449, 180752), (572, 141884), (632, 128414), (869, 93392), (898, 90376), (1027, 79024), (1144, 70942), (1264, 64207), (1738, 46696), (1796, 45188), (2054, 39512), (2288, 35471), (3476, 23348), (3592, 22594), (4108, 19756), (4939, 16432), (5837, 13904), (6952, 11674), (7184, 11297), (8216, 9878)]