21472209

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{277}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 36429120

約数和(自身を除く): 14956911

約数列:

[1, 3, 9, 11, 27, 29, 33, 81, 87, 99, 243, 261, 277, 297, 319, 783, 831, 891, 957, 2349, 2493, 2673, 2871, 3047, 7047, 7479, 8033, 8613, 9141, 22437, 24099, 25839, 27423, 67311, 72297, 77517, 82269, 88363, 216891, 246807, 265089, 650673, 740421, 795267, 1952019, 2385801, 7157403, 21472209]

約数ペア:

[(1, 21472209), (3, 7157403), (9, 2385801), (11, 1952019), (27, 795267), (29, 740421), (33, 650673), (81, 265089), (87, 246807), (99, 216891), (243, 88363), (261, 82269), (277, 77517), (297, 72297), (319, 67311), (783, 27423), (831, 25839), (891, 24099), (957, 22437), (2349, 9141), (2493, 8613), (2673, 8033), (2871, 7479), (3047, 7047)]