12976540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 28385280

約数和(自身を除く): 15408740

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 191, 215, 316, 382, 395, 430, 764, 790, 860, 955, 1580, 1910, 3397, 3820, 6794, 8213, 13588, 15089, 16426, 16985, 30178, 32852, 33970, 41065, 60356, 67940, 75445, 82130, 150890, 164260, 301780, 648827, 1297654, 2595308, 3244135, 6488270, 12976540]

約数ペア:

[(1, 12976540), (2, 6488270), (4, 3244135), (5, 2595308), (10, 1297654), (20, 648827), (43, 301780), (79, 164260), (86, 150890), (158, 82130), (172, 75445), (191, 67940), (215, 60356), (316, 41065), (382, 33970), (395, 32852), (430, 30178), (764, 16985), (790, 16426), (860, 15089), (955, 13588), (1580, 8213), (1910, 6794), (3397, 3820)]