18728703

素因数分解:

$3^2\times 7^1\times {\mathrm{373}}^1\times {\mathrm{797}}^1$

素因数の和:1183

約数の個数: 24

約数和(自身を含む): 31039008

約数和(自身を除く): 12310305

約数列:

[1, 3, 7, 9, 21, 63, 373, 797, 1119, 2391, 2611, 3357, 5579, 7173, 7833, 16737, 23499, 50211, 297281, 891843, 2080967, 2675529, 6242901, 18728703]

約数ペア:

[(1, 18728703), (3, 6242901), (7, 2675529), (9, 2080967), (21, 891843), (63, 297281), (373, 50211), (797, 23499), (1119, 16737), (2391, 7833), (2611, 7173), (3357, 5579)]