81253796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 157313520

約数和(自身を除く): 76059724

約数列:

[1, 2, 4, 13, 26, 52, 89, 97, 178, 181, 194, 356, 362, 388, 724, 1157, 1261, 2314, 2353, 2522, 4628, 4706, 5044, 8633, 9412, 16109, 17266, 17557, 32218, 34532, 35114, 64436, 70228, 112229, 209417, 224458, 228241, 418834, 448916, 456482, 837668, 912964, 1562573, 3125146, 6250292, 20313449, 40626898, 81253796]

約数ペア:

[(1, 81253796), (2, 40626898), (4, 20313449), (13, 6250292), (26, 3125146), (52, 1562573), (89, 912964), (97, 837668), (178, 456482), (181, 448916), (194, 418834), (356, 228241), (362, 224458), (388, 209417), (724, 112229), (1157, 70228), (1261, 64436), (2314, 35114), (2353, 34532), (2522, 32218), (4628, 17557), (4706, 17266), (5044, 16109), (8633, 9412)]