20943711

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{443}}^1$

素因数の和:572

約数の個数: 32

約数和(自身を含む): 33246720

約数和(自身を除く): 12303009

約数列:

[1, 3, 9, 17, 27, 51, 103, 153, 309, 443, 459, 927, 1329, 1751, 2781, 3987, 5253, 7531, 11961, 15759, 22593, 45629, 47277, 67779, 136887, 203337, 410661, 775693, 1231983, 2327079, 6981237, 20943711]

約数ペア:

[(1, 20943711), (3, 6981237), (9, 2327079), (17, 1231983), (27, 775693), (51, 410661), (103, 203337), (153, 136887), (309, 67779), (443, 47277), (459, 45629), (927, 22593), (1329, 15759), (1751, 11961), (2781, 7531), (3987, 5253)]