21135378

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{743}}^1$

素因数の和:1190

約数の個数: 32

約数和(自身を含む): 46282752

約数和(自身を除く): 25147374

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 431, 743, 862, 1293, 1486, 2229, 2586, 4458, 4741, 8173, 9482, 14223, 16346, 24519, 28446, 49038, 320233, 640466, 960699, 1921398, 3522563, 7045126, 10567689, 21135378]

約数ペア:

[(1, 21135378), (2, 10567689), (3, 7045126), (6, 3522563), (11, 1921398), (22, 960699), (33, 640466), (66, 320233), (431, 49038), (743, 28446), (862, 24519), (1293, 16346), (1486, 14223), (2229, 9482), (2586, 8173), (4458, 4741)]