21178764

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{12517}}^1$

素因数の和:12574

約数の個数: 36

約数和(自身を含む): 54678624

約数和(自身を除く): 33499860

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 94, 141, 188, 282, 423, 564, 846, 1692, 12517, 25034, 37551, 50068, 75102, 112653, 150204, 225306, 450612, 588299, 1176598, 1764897, 2353196, 3529794, 5294691, 7059588, 10589382, 21178764]

約数ペア:

[(1, 21178764), (2, 10589382), (3, 7059588), (4, 5294691), (6, 3529794), (9, 2353196), (12, 1764897), (18, 1176598), (36, 588299), (47, 450612), (94, 225306), (141, 150204), (188, 112653), (282, 75102), (423, 50068), (564, 37551), (846, 25034), (1692, 12517)]