21178908

素因数分解:

$2^2\times 3^9\times {\mathrm{269}}^1$

素因数の和:300

約数の個数: 60

約数和(自身を含む): 55800360

約数和(自身を除く): 34621452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 269, 324, 486, 538, 729, 807, 972, 1076, 1458, 1614, 2187, 2421, 2916, 3228, 4374, 4842, 6561, 7263, 8748, 9684, 13122, 14526, 19683, 21789, 26244, 29052, 39366, 43578, 65367, 78732, 87156, 130734, 196101, 261468, 392202, 588303, 784404, 1176606, 1764909, 2353212, 3529818, 5294727, 7059636, 10589454, 21178908]

約数ペア:

[(1, 21178908), (2, 10589454), (3, 7059636), (4, 5294727), (6, 3529818), (9, 2353212), (12, 1764909), (18, 1176606), (27, 784404), (36, 588303), (54, 392202), (81, 261468), (108, 196101), (162, 130734), (243, 87156), (269, 78732), (324, 65367), (486, 43578), (538, 39366), (729, 29052), (807, 26244), (972, 21789), (1076, 19683), (1458, 14526), (1614, 13122), (2187, 9684), (2421, 8748), (2916, 7263), (3228, 6561), (4374, 4842)]