21455853

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 31881600

約数和(自身を除く): 10425747

約数列:

[1, 3, 17, 29, 51, 87, 89, 163, 267, 489, 493, 1479, 1513, 2581, 2771, 4539, 4727, 7743, 8313, 14181, 14507, 43521, 43877, 80359, 131631, 241077, 246619, 420703, 739857, 1262109, 7151951, 21455853]

約数ペア:

[(1, 21455853), (3, 7151951), (17, 1262109), (29, 739857), (51, 420703), (87, 246619), (89, 241077), (163, 131631), (267, 80359), (489, 43877), (493, 43521), (1479, 14507), (1513, 14181), (2581, 8313), (2771, 7743), (4539, 4727)]