21492318445

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{561377}}^1$

素因数の和:561445

約数の個数: 32

約数和(自身を含む): 30179681280

約数和(自身を除く): 8687362835

約数列:

[1, 5, 13, 19, 31, 65, 95, 155, 247, 403, 589, 1235, 2015, 2945, 7657, 38285, 561377, 2806885, 7297901, 10666163, 17402687, 36489505, 53330815, 87013435, 138660119, 226234931, 330651053, 693300595, 1131174655, 1653255265, 4298463689, 21492318445]

約数ペア:

[(1, 21492318445), (5, 4298463689), (13, 1653255265), (19, 1131174655), (31, 693300595), (65, 330651053), (95, 226234931), (155, 138660119), (247, 87013435), (403, 53330815), (589, 36489505), (1235, 17402687), (2015, 10666163), (2945, 7297901), (7657, 2806885), (38285, 561377)]