21165678

素因数分解:

$2^1\times 3^3\times {\mathrm{137}}^1\times {\mathrm{2861}}^1$

素因数の和:3009

約数の個数: 32

約数和(自身を含む): 47394720

約数和(自身を除く): 26229042

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 137, 274, 411, 822, 1233, 2466, 2861, 3699, 5722, 7398, 8583, 17166, 25749, 51498, 77247, 154494, 391957, 783914, 1175871, 2351742, 3527613, 7055226, 10582839, 21165678]

約数ペア:

[(1, 21165678), (2, 10582839), (3, 7055226), (6, 3527613), (9, 2351742), (18, 1175871), (27, 783914), (54, 391957), (137, 154494), (274, 77247), (411, 51498), (822, 25749), (1233, 17166), (2466, 8583), (2861, 7398), (3699, 5722)]