21038508

素因数分解:

$2^2\times 3^3\times {\mathrm{83}}^1\times {\mathrm{2347}}^1$

素因数の和:2443

約数の個数: 48

約数和(自身を含む): 55224960

約数和(自身を除く): 34186452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 83, 108, 166, 249, 332, 498, 747, 996, 1494, 2241, 2347, 2988, 4482, 4694, 7041, 8964, 9388, 14082, 21123, 28164, 42246, 63369, 84492, 126738, 194801, 253476, 389602, 584403, 779204, 1168806, 1753209, 2337612, 3506418, 5259627, 7012836, 10519254, 21038508]

約数ペア:

[(1, 21038508), (2, 10519254), (3, 7012836), (4, 5259627), (6, 3506418), (9, 2337612), (12, 1753209), (18, 1168806), (27, 779204), (36, 584403), (54, 389602), (83, 253476), (108, 194801), (166, 126738), (249, 84492), (332, 63369), (498, 42246), (747, 28164), (996, 21123), (1494, 14082), (2241, 9388), (2347, 8964), (2988, 7041), (4482, 4694)]