12980954380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{937}}^1$

素因数の和:1259

約数の個数: 96

約数和(自身を含む): 28393485120

約数和(自身を除く): 15412530740

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 181, 215, 356, 362, 430, 445, 724, 860, 890, 905, 937, 1780, 1810, 1874, 3620, 3748, 3827, 4685, 7654, 7783, 9370, 15308, 15566, 16109, 18740, 19135, 31132, 32218, 38270, 38915, 40291, 64436, 76540, 77830, 80545, 80582, 83393, 155660, 161090, 161164, 166786, 169597, 201455, 322180, 333572, 339194, 402910, 416965, 678388, 692687, 805820, 833930, 847985, 1385374, 1667860, 1695970, 2770748, 3391940, 3463435, 3585899, 6926870, 7171798, 7292671, 13853740, 14343596, 14585342, 15094133, 17929495, 29170684, 30188266, 35858990, 36463355, 60376532, 71717980, 72926710, 75470665, 145853420, 150941330, 301882660, 649047719, 1298095438, 2596190876, 3245238595, 6490477190, 12980954380]

約数ペア:

[(1, 12980954380), (2, 6490477190), (4, 3245238595), (5, 2596190876), (10, 1298095438), (20, 649047719), (43, 301882660), (86, 150941330), (89, 145853420), (172, 75470665), (178, 72926710), (181, 71717980), (215, 60376532), (356, 36463355), (362, 35858990), (430, 30188266), (445, 29170684), (724, 17929495), (860, 15094133), (890, 14585342), (905, 14343596), (937, 13853740), (1780, 7292671), (1810, 7171798), (1874, 6926870), (3620, 3585899), (3748, 3463435), (3827, 3391940), (4685, 2770748), (7654, 1695970), (7783, 1667860), (9370, 1385374), (15308, 847985), (15566, 833930), (16109, 805820), (18740, 692687), (19135, 678388), (31132, 416965), (32218, 402910), (38270, 339194), (38915, 333572), (40291, 322180), (64436, 201455), (76540, 169597), (77830, 166786), (80545, 161164), (80582, 161090), (83393, 155660)]