138959639

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{227}}^1$

素因数の和:316

約数の個数: 36

約数和(自身を含む): 180670392

約数和(自身を除く): 41710753

約数列:

[1, 7, 13, 31, 49, 91, 217, 227, 403, 637, 961, 1519, 1589, 2821, 2951, 6727, 7037, 11123, 12493, 19747, 20657, 47089, 49259, 87451, 91481, 144599, 218147, 344813, 612157, 640367, 1527029, 2835911, 4482569, 10689203, 19851377, 138959639]

約数ペア:

[(1, 138959639), (7, 19851377), (13, 10689203), (31, 4482569), (49, 2835911), (91, 1527029), (217, 640367), (227, 612157), (403, 344813), (637, 218147), (961, 144599), (1519, 91481), (1589, 87451), (2821, 49259), (2951, 47089), (6727, 20657), (7037, 19747), (11123, 12493)]