20970291

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1\times {\mathrm{509}}^1$

素因数の和:986

約数の個数: 16

約数和(自身を含む): 28984320

約数和(自身を除く): 8014029

約数列:

[1, 3, 31, 93, 443, 509, 1329, 1527, 13733, 15779, 41199, 47337, 225487, 676461, 6990097, 20970291]

約数ペア:

[(1, 20970291), (3, 6990097), (31, 676461), (93, 225487), (443, 47337), (509, 41199), (1329, 15779), (1527, 13733)]