66649040

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4229}}^1$

素因数の和:4439

約数の個数: 40

約数和(自身を含む): 155782440

約数和(自身を除く): 89133400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 4229, 7880, 8458, 15760, 16916, 21145, 33832, 42290, 67664, 84580, 169160, 338320, 833113, 1666226, 3332452, 4165565, 6664904, 8331130, 13329808, 16662260, 33324520, 66649040]

約数ペア:

[(1, 66649040), (2, 33324520), (4, 16662260), (5, 13329808), (8, 8331130), (10, 6664904), (16, 4165565), (20, 3332452), (40, 1666226), (80, 833113), (197, 338320), (394, 169160), (788, 84580), (985, 67664), (1576, 42290), (1970, 33832), (3152, 21145), (3940, 16916), (4229, 15760), (7880, 8458)]