20788352

素因数分解:

$2^7\times {\mathrm{13}}^2\times {\mathrm{31}}^2$

素因数の和:102

約数の個数: 72

約数和(自身を含む): 46338345

約数和(自身を除く): 25549993

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 169, 208, 248, 338, 403, 416, 496, 676, 806, 832, 961, 992, 1352, 1612, 1664, 1922, 1984, 2704, 3224, 3844, 3968, 5239, 5408, 6448, 7688, 10478, 10816, 12493, 12896, 15376, 20956, 21632, 24986, 25792, 30752, 41912, 49972, 51584, 61504, 83824, 99944, 123008, 162409, 167648, 199888, 324818, 335296, 399776, 649636, 670592, 799552, 1299272, 1599104, 2598544, 5197088, 10394176, 20788352]

約数ペア:

[(1, 20788352), (2, 10394176), (4, 5197088), (8, 2598544), (13, 1599104), (16, 1299272), (26, 799552), (31, 670592), (32, 649636), (52, 399776), (62, 335296), (64, 324818), (104, 199888), (124, 167648), (128, 162409), (169, 123008), (208, 99944), (248, 83824), (338, 61504), (403, 51584), (416, 49972), (496, 41912), (676, 30752), (806, 25792), (832, 24986), (961, 21632), (992, 20956), (1352, 15376), (1612, 12896), (1664, 12493), (1922, 10816), (1984, 10478), (2704, 7688), (3224, 6448), (3844, 5408), (3968, 5239)]