21072938

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{9091}}^1$

素因数の和:9173

約数の個数: 16

約数和(自身を含む): 33822240

約数和(自身を除く): 12749302

約数列:

[1, 2, 19, 38, 61, 122, 1159, 2318, 9091, 18182, 172729, 345458, 554551, 1109102, 10536469, 21072938]

約数ペア:

[(1, 21072938), (2, 10536469), (19, 1109102), (38, 554551), (61, 345458), (122, 172729), (1159, 18182), (2318, 9091)]