81891368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41443}}^1$

素因数の和:41481

約数の個数: 32

約数和(自身を含む): 174064800

約数和(自身を除く): 92173432

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 41443, 82886, 165772, 331544, 538759, 787417, 1077518, 1574834, 2155036, 3149668, 4310072, 6299336, 10236421, 20472842, 40945684, 81891368]

約数ペア:

[(1, 81891368), (2, 40945684), (4, 20472842), (8, 10236421), (13, 6299336), (19, 4310072), (26, 3149668), (38, 2155036), (52, 1574834), (76, 1077518), (104, 787417), (152, 538759), (247, 331544), (494, 165772), (988, 82886), (1976, 41443)]