21759156

素因数分解:

$2^2\times 3^2\times {\mathrm{491}}^1\times {\mathrm{1231}}^1$

素因数の和:1732

約数の個数: 36

約数和(自身を含む): 55159104

約数和(自身を除く): 33399948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 491, 982, 1231, 1473, 1964, 2462, 2946, 3693, 4419, 4924, 5892, 7386, 8838, 11079, 14772, 17676, 22158, 44316, 604421, 1208842, 1813263, 2417684, 3626526, 5439789, 7253052, 10879578, 21759156]

約数ペア:

[(1, 21759156), (2, 10879578), (3, 7253052), (4, 5439789), (6, 3626526), (9, 2417684), (12, 1813263), (18, 1208842), (36, 604421), (491, 44316), (982, 22158), (1231, 17676), (1473, 14772), (1964, 11079), (2462, 8838), (2946, 7386), (3693, 5892), (4419, 4924)]