21189810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1237}}^1$

素因数の和:1818

約数の個数: 32

約数和(自身を含む): 50985792

約数和(自身を除く): 29795982

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 571, 1142, 1237, 1713, 2474, 2855, 3426, 3711, 5710, 6185, 7422, 8565, 12370, 17130, 18555, 37110, 706327, 1412654, 2118981, 3531635, 4237962, 7063270, 10594905, 21189810]

約数ペア:

[(1, 21189810), (2, 10594905), (3, 7063270), (5, 4237962), (6, 3531635), (10, 2118981), (15, 1412654), (30, 706327), (571, 37110), (1142, 18555), (1237, 17130), (1713, 12370), (2474, 8565), (2855, 7422), (3426, 6185), (3711, 5710)]