78789321

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:623

約数の個数: 48

約数和(自身を含む): 130705920

約数和(自身を除く): 51916599

約数列:

[1, 3, 9, 13, 27, 31, 39, 93, 117, 169, 279, 351, 403, 507, 557, 837, 1209, 1521, 1671, 3627, 4563, 5013, 5239, 7241, 10881, 15039, 15717, 17267, 21723, 47151, 51801, 65169, 94133, 141453, 155403, 195507, 224471, 282399, 466209, 673413, 847197, 2020239, 2541591, 2918123, 6060717, 8754369, 26263107, 78789321]

約数ペア:

[(1, 78789321), (3, 26263107), (9, 8754369), (13, 6060717), (27, 2918123), (31, 2541591), (39, 2020239), (93, 847197), (117, 673413), (169, 466209), (279, 282399), (351, 224471), (403, 195507), (507, 155403), (557, 141453), (837, 94133), (1209, 65169), (1521, 51801), (1671, 47151), (3627, 21723), (4563, 17267), (5013, 15717), (5239, 15039), (7241, 10881)]