66728240

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{8599}}^1$

素因数の和:8709

約数の個数: 40

約数和(自身を含む): 156760800

約数和(自身を除く): 90032560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 7760, 8599, 17198, 34396, 42995, 68792, 85990, 137584, 171980, 343960, 687920, 834103, 1668206, 3336412, 4170515, 6672824, 8341030, 13345648, 16682060, 33364120, 66728240]

約数ペア:

[(1, 66728240), (2, 33364120), (4, 16682060), (5, 13345648), (8, 8341030), (10, 6672824), (16, 4170515), (20, 3336412), (40, 1668206), (80, 834103), (97, 687920), (194, 343960), (388, 171980), (485, 137584), (776, 85990), (970, 68792), (1552, 42995), (1940, 34396), (3880, 17198), (7760, 8599)]