20720583

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:293

約数の個数: 48

約数和(自身を含む): 35136000

約数和(自身を除く): 14415417

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 117, 169, 171, 239, 247, 351, 507, 513, 717, 741, 1521, 2151, 2223, 3107, 3211, 4541, 4563, 6453, 6669, 9321, 9633, 13623, 27963, 28899, 40391, 40869, 59033, 83889, 86697, 121173, 122607, 177099, 363519, 531297, 767429, 1090557, 1593891, 2302287, 6906861, 20720583]

約数ペア:

[(1, 20720583), (3, 6906861), (9, 2302287), (13, 1593891), (19, 1090557), (27, 767429), (39, 531297), (57, 363519), (117, 177099), (169, 122607), (171, 121173), (239, 86697), (247, 83889), (351, 59033), (507, 40869), (513, 40391), (717, 28899), (741, 27963), (1521, 13623), (2151, 9633), (2223, 9321), (3107, 6669), (3211, 6453), (4541, 4563)]