78840539980

素因数分解:

$2^2\times 5^1\times {\mathrm{1801}}^1\times {\mathrm{2188799}}^1$

素因数の和:2190609

約数の個数: 24

約数和(自身を含む): 165657139200

約数和(自身を除く): 86816599220

約数列:

[1, 2, 4, 5, 10, 20, 1801, 3602, 7204, 9005, 18010, 36020, 2188799, 4377598, 8755196, 10943995, 21887990, 43775980, 3942026999, 7884053998, 15768107996, 19710134995, 39420269990, 78840539980]

約数ペア:

[(1, 78840539980), (2, 39420269990), (4, 19710134995), (5, 15768107996), (10, 7884053998), (20, 3942026999), (1801, 43775980), (3602, 21887990), (7204, 10943995), (9005, 8755196), (18010, 4377598), (36020, 2188799)]