20537713

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 25137000

約数和(自身を除く): 4599287

約数列:

[1, 7, 29, 49, 97, 149, 203, 679, 1043, 1421, 2813, 4321, 4753, 7301, 14453, 19691, 30247, 101171, 137837, 211729, 419137, 708197, 2933959, 20537713]

約数ペア:

[(1, 20537713), (7, 2933959), (29, 708197), (49, 419137), (97, 211729), (149, 137837), (203, 101171), (679, 30247), (1043, 19691), (1421, 14453), (2813, 7301), (4321, 4753)]