20203729

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:254

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 6407471

約数列:

[1, 7, 13, 23, 49, 91, 161, 197, 299, 343, 637, 1127, 1379, 2093, 2561, 4459, 4531, 7889, 9653, 14651, 17927, 31717, 58903, 67571, 102557, 125489, 222019, 412321, 878423, 1554133, 2886247, 20203729]

約数ペア:

[(1, 20203729), (7, 2886247), (13, 1554133), (23, 878423), (49, 412321), (91, 222019), (161, 125489), (197, 102557), (299, 67571), (343, 58903), (637, 31717), (1127, 17927), (1379, 14651), (2093, 9653), (2561, 7889), (4459, 4531)]