27702140

素因数分解:

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

素因数の和:374

約数の個数: 48

約数和(自身を含む): 59875200

約数和(自身を除く): 32173060

約数列:

[1, 2, 4, 5, 10, 20, 79, 89, 158, 178, 197, 316, 356, 394, 395, 445, 788, 790, 890, 985, 1580, 1780, 1970, 3940, 7031, 14062, 15563, 17533, 28124, 31126, 35066, 35155, 62252, 70132, 70310, 77815, 87665, 140620, 155630, 175330, 311260, 350660, 1385107, 2770214, 5540428, 6925535, 13851070, 27702140]

約数ペア:

[(1, 27702140), (2, 13851070), (4, 6925535), (5, 5540428), (10, 2770214), (20, 1385107), (79, 350660), (89, 311260), (158, 175330), (178, 155630), (197, 140620), (316, 87665), (356, 77815), (394, 70310), (395, 70132), (445, 62252), (788, 35155), (790, 35066), (890, 31126), (985, 28124), (1580, 17533), (1780, 15563), (1970, 14062), (3940, 7031)]