21005438

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{9221}}^1$

素因数の和:9307

約数の個数: 16

約数和(自身を含む): 33863184

約数和(自身を除く): 12857746

約数列:

[1, 2, 17, 34, 67, 134, 1139, 2278, 9221, 18442, 156757, 313514, 617807, 1235614, 10502719, 21005438]

約数ペア:

[(1, 21005438), (2, 10502719), (17, 1235614), (34, 617807), (67, 313514), (134, 156757), (1139, 18442), (2278, 9221)]