55404280

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 128304000

約数和(自身を除く): 72899720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 89, 158, 178, 197, 316, 356, 394, 395, 445, 632, 712, 788, 790, 890, 985, 1576, 1580, 1780, 1970, 3160, 3560, 3940, 7031, 7880, 14062, 15563, 17533, 28124, 31126, 35066, 35155, 56248, 62252, 70132, 70310, 77815, 87665, 124504, 140264, 140620, 155630, 175330, 281240, 311260, 350660, 622520, 701320, 1385107, 2770214, 5540428, 6925535, 11080856, 13851070, 27702140, 55404280]

約数ペア:

[(1, 55404280), (2, 27702140), (4, 13851070), (5, 11080856), (8, 6925535), (10, 5540428), (20, 2770214), (40, 1385107), (79, 701320), (89, 622520), (158, 350660), (178, 311260), (197, 281240), (316, 175330), (356, 155630), (394, 140620), (395, 140264), (445, 124504), (632, 87665), (712, 77815), (788, 70310), (790, 70132), (890, 62252), (985, 56248), (1576, 35155), (1580, 35066), (1780, 31126), (1970, 28124), (3160, 17533), (3560, 15563), (3940, 14062), (7031, 7880)]