20778303

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 35392896

約数和(自身を除く): 14614593

約数列:

[1, 3, 7, 13, 21, 39, 49, 83, 91, 131, 147, 249, 273, 393, 581, 637, 917, 1079, 1703, 1743, 1911, 2751, 3237, 4067, 5109, 6419, 7553, 10873, 11921, 12201, 19257, 22659, 32619, 35763, 52871, 76111, 83447, 141349, 158613, 228333, 250341, 424047, 532777, 989443, 1598331, 2968329, 6926101, 20778303]

約数ペア:

[(1, 20778303), (3, 6926101), (7, 2968329), (13, 1598331), (21, 989443), (39, 532777), (49, 424047), (83, 250341), (91, 228333), (131, 158613), (147, 141349), (249, 83447), (273, 76111), (393, 52871), (581, 35763), (637, 32619), (917, 22659), (1079, 19257), (1703, 12201), (1743, 11921), (1911, 10873), (2751, 7553), (3237, 6419), (4067, 5109)]