21056523

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 11084277

約数列:

[1, 3, 17, 23, 29, 51, 69, 87, 391, 493, 619, 667, 1173, 1479, 1857, 2001, 10523, 11339, 14237, 17951, 31569, 34017, 42711, 53853, 242029, 305167, 412873, 726087, 915501, 1238619, 7018841, 21056523]

約数ペア:

[(1, 21056523), (3, 7018841), (17, 1238619), (23, 915501), (29, 726087), (51, 412873), (69, 305167), (87, 242029), (391, 53853), (493, 42711), (619, 34017), (667, 31569), (1173, 17951), (1479, 14237), (1857, 11339), (2001, 10523)]