20028140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1543}}^1$

素因数の和:1622

約数の個数: 48

約数和(自身を含む): 46690560

約数和(自身を除く): 26662420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1298, 1543, 2596, 3086, 3245, 6172, 6490, 7715, 12980, 15430, 16973, 30860, 33946, 67892, 84865, 91037, 169730, 182074, 339460, 364148, 455185, 910370, 1001407, 1820740, 2002814, 4005628, 5007035, 10014070, 20028140]

約数ペア:

[(1, 20028140), (2, 10014070), (4, 5007035), (5, 4005628), (10, 2002814), (11, 1820740), (20, 1001407), (22, 910370), (44, 455185), (55, 364148), (59, 339460), (110, 182074), (118, 169730), (220, 91037), (236, 84865), (295, 67892), (590, 33946), (649, 30860), (1180, 16973), (1298, 15430), (1543, 12980), (2596, 7715), (3086, 6490), (3245, 6172)]