13640140

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 29635200

約数和(自身を除く): 15995060

約数列:

[1, 2, 4, 5, 10, 20, 79, 89, 97, 158, 178, 194, 316, 356, 388, 395, 445, 485, 790, 890, 970, 1580, 1780, 1940, 7031, 7663, 8633, 14062, 15326, 17266, 28124, 30652, 34532, 35155, 38315, 43165, 70310, 76630, 86330, 140620, 153260, 172660, 682007, 1364014, 2728028, 3410035, 6820070, 13640140]

約数ペア:

[(1, 13640140), (2, 6820070), (4, 3410035), (5, 2728028), (10, 1364014), (20, 682007), (79, 172660), (89, 153260), (97, 140620), (158, 86330), (178, 76630), (194, 70310), (316, 43165), (356, 38315), (388, 35155), (395, 34532), (445, 30652), (485, 28124), (790, 17266), (890, 15326), (970, 14062), (1580, 8633), (1780, 7663), (1940, 7031)]