78817881

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 111760128

約数和(自身を除く): 32942247

約数列:

[1, 3, 37, 71, 73, 111, 137, 213, 219, 411, 2627, 2701, 5069, 5183, 7881, 8103, 9727, 10001, 15207, 15549, 29181, 30003, 191771, 359899, 370037, 575313, 710071, 1079697, 1110111, 2130213, 26272627, 78817881]

約数ペア:

[(1, 78817881), (3, 26272627), (37, 2130213), (71, 1110111), (73, 1079697), (111, 710071), (137, 575313), (213, 370037), (219, 359899), (411, 191771), (2627, 30003), (2701, 29181), (5069, 15549), (5183, 15207), (7881, 10001), (8103, 9727)]