20508717176

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1987}}^1\times {\mathrm{2617}}^1$

素因数の和:4656

約数の個数: 64

約数和(自身を含む): 42157130400

約数和(自身を除く): 21648413224

約数列:

[1, 2, 4, 8, 17, 29, 34, 58, 68, 116, 136, 232, 493, 986, 1972, 1987, 2617, 3944, 3974, 5234, 7948, 10468, 15896, 20936, 33779, 44489, 57623, 67558, 75893, 88978, 115246, 135116, 151786, 177956, 230492, 270232, 303572, 355912, 460984, 607144, 979591, 1290181, 1959182, 2580362, 3918364, 5160724, 5199979, 7836728, 10321448, 10399958, 20799916, 41599832, 88399643, 150799391, 176799286, 301598782, 353598572, 603197564, 707197144, 1206395128, 2563589647, 5127179294, 10254358588, 20508717176]

約数ペア:

[(1, 20508717176), (2, 10254358588), (4, 5127179294), (8, 2563589647), (17, 1206395128), (29, 707197144), (34, 603197564), (58, 353598572), (68, 301598782), (116, 176799286), (136, 150799391), (232, 88399643), (493, 41599832), (986, 20799916), (1972, 10399958), (1987, 10321448), (2617, 7836728), (3944, 5199979), (3974, 5160724), (5234, 3918364), (7948, 2580362), (10468, 1959182), (15896, 1290181), (20936, 979591), (33779, 607144), (44489, 460984), (57623, 355912), (67558, 303572), (75893, 270232), (88978, 230492), (115246, 177956), (135116, 151786)]