21457683

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{541}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 34601280

約数和(自身を除く): 13143597

約数列:

[1, 3, 9, 13, 27, 39, 113, 117, 339, 351, 541, 1017, 1469, 1623, 3051, 4407, 4869, 7033, 13221, 14607, 21099, 39663, 61133, 63297, 183399, 189891, 550197, 794729, 1650591, 2384187, 7152561, 21457683]

約数ペア:

[(1, 21457683), (3, 7152561), (9, 2384187), (13, 1650591), (27, 794729), (39, 550197), (113, 189891), (117, 183399), (339, 63297), (351, 61133), (541, 39663), (1017, 21099), (1469, 14607), (1623, 13221), (3051, 7033), (4407, 4869)]