20856490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3541}}^1$

素因数の和:3598

約数の個数: 32

約数和(自身を含む): 40803840

約数和(自身を除く): 19947350

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 190, 310, 589, 1178, 2945, 3541, 5890, 7082, 17705, 35410, 67279, 109771, 134558, 219542, 336395, 548855, 672790, 1097710, 2085649, 4171298, 10428245, 20856490]

約数ペア:

[(1, 20856490), (2, 10428245), (5, 4171298), (10, 2085649), (19, 1097710), (31, 672790), (38, 548855), (62, 336395), (95, 219542), (155, 134558), (190, 109771), (310, 67279), (589, 35410), (1178, 17705), (2945, 7082), (3541, 5890)]