21709107

素因数分解:

$3^3\times 7^2\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 38167200

約数和(自身を除く): 16458093

約数列:

[1, 3, 7, 9, 21, 27, 49, 61, 63, 147, 183, 189, 269, 427, 441, 549, 807, 1281, 1323, 1647, 1883, 2421, 2989, 3843, 5649, 7263, 8967, 11529, 13181, 16409, 16947, 26901, 39543, 49227, 50841, 80703, 114863, 118629, 147681, 344589, 355887, 443043, 804041, 1033767, 2412123, 3101301, 7236369, 21709107]

約数ペア:

[(1, 21709107), (3, 7236369), (7, 3101301), (9, 2412123), (21, 1033767), (27, 804041), (49, 443043), (61, 355887), (63, 344589), (147, 147681), (183, 118629), (189, 114863), (269, 80703), (427, 50841), (441, 49227), (549, 39543), (807, 26901), (1281, 16947), (1323, 16409), (1647, 13181), (1883, 11529), (2421, 8967), (2989, 7263), (3843, 5649)]