21119556784

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{3853}}^1$

素因数の和:4142

約数の個数: 80

約数和(自身を含む): 43148274048

約数和(自身を除く): 22028717264

約数列:

[1, 2, 4, 8, 16, 37, 47, 74, 94, 148, 188, 197, 296, 376, 394, 592, 752, 788, 1576, 1739, 3152, 3478, 3853, 6956, 7289, 7706, 9259, 13912, 14578, 15412, 18518, 27824, 29156, 30824, 37036, 58312, 61648, 74072, 116624, 142561, 148144, 181091, 285122, 342583, 362182, 570244, 685166, 724364, 759041, 1140488, 1370332, 1448728, 1518082, 2280976, 2740664, 2897456, 3036164, 5481328, 6072328, 6700367, 12144656, 13400734, 26801468, 28084517, 35674927, 53602936, 56169034, 71349854, 107205872, 112338068, 142699708, 224676136, 285399416, 449352272, 570798832, 1319972299, 2639944598, 5279889196, 10559778392, 21119556784]

約数ペア:

[(1, 21119556784), (2, 10559778392), (4, 5279889196), (8, 2639944598), (16, 1319972299), (37, 570798832), (47, 449352272), (74, 285399416), (94, 224676136), (148, 142699708), (188, 112338068), (197, 107205872), (296, 71349854), (376, 56169034), (394, 53602936), (592, 35674927), (752, 28084517), (788, 26801468), (1576, 13400734), (1739, 12144656), (3152, 6700367), (3478, 6072328), (3853, 5481328), (6956, 3036164), (7289, 2897456), (7706, 2740664), (9259, 2280976), (13912, 1518082), (14578, 1448728), (15412, 1370332), (18518, 1140488), (27824, 759041), (29156, 724364), (30824, 685166), (37036, 570244), (58312, 362182), (61648, 342583), (74072, 285122), (116624, 181091), (142561, 148144)]