21655050248

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{516679}}^1$

素因数の和:516742

約数の個数: 48

約数和(自身を含む): 45385171200

約数和(自身を除く): 23730120952

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 169, 248, 338, 403, 676, 806, 1352, 1612, 3224, 5239, 10478, 20956, 41912, 516679, 1033358, 2066716, 4133432, 6716827, 13433654, 16017049, 26867308, 32034098, 53734616, 64068196, 87318751, 128136392, 174637502, 208221637, 349275004, 416443274, 698550008, 832886548, 1665773096, 2706881281, 5413762562, 10827525124, 21655050248]

約数ペア:

[(1, 21655050248), (2, 10827525124), (4, 5413762562), (8, 2706881281), (13, 1665773096), (26, 832886548), (31, 698550008), (52, 416443274), (62, 349275004), (104, 208221637), (124, 174637502), (169, 128136392), (248, 87318751), (338, 64068196), (403, 53734616), (676, 32034098), (806, 26867308), (1352, 16017049), (1612, 13433654), (3224, 6716827), (5239, 4133432), (10478, 2066716), (20956, 1033358), (41912, 516679)]