21009971

素因数分解:

${\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{373}}^1$

素因数の和:506

約数の個数: 16

約数和(自身を含む): 22978560

約数和(自身を除く): 1968589

約数列:

[1, 23, 31, 79, 373, 713, 1817, 2449, 8579, 11563, 29467, 56327, 265949, 677741, 913477, 21009971]

約数ペア:

[(1, 21009971), (23, 913477), (31, 677741), (79, 265949), (373, 56327), (713, 29467), (1817, 11563), (2449, 8579)]