21720678

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1867}}^1$

素因数の和:2156

約数の個数: 32

約数和(自身を含む): 49853184

約数和(自身を除く): 28132506

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 277, 554, 831, 1662, 1867, 1939, 3734, 3878, 5601, 5817, 11202, 11634, 13069, 26138, 39207, 78414, 517159, 1034318, 1551477, 3102954, 3620113, 7240226, 10860339, 21720678]

約数ペア:

[(1, 21720678), (2, 10860339), (3, 7240226), (6, 3620113), (7, 3102954), (14, 1551477), (21, 1034318), (42, 517159), (277, 78414), (554, 39207), (831, 26138), (1662, 13069), (1867, 11634), (1939, 11202), (3734, 5817), (3878, 5601)]