13387640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{349}}^1$

素因数の和:504

約数の個数: 64

約数和(自身を含む): 34776000

約数和(自身を除く): 21388360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 137, 140, 274, 280, 349, 548, 685, 698, 959, 1096, 1370, 1396, 1745, 1918, 2443, 2740, 2792, 3490, 3836, 4795, 4886, 5480, 6980, 7672, 9590, 9772, 12215, 13960, 19180, 19544, 24430, 38360, 47813, 48860, 95626, 97720, 191252, 239065, 334691, 382504, 478130, 669382, 956260, 1338764, 1673455, 1912520, 2677528, 3346910, 6693820, 13387640]

約数ペア:

[(1, 13387640), (2, 6693820), (4, 3346910), (5, 2677528), (7, 1912520), (8, 1673455), (10, 1338764), (14, 956260), (20, 669382), (28, 478130), (35, 382504), (40, 334691), (56, 239065), (70, 191252), (137, 97720), (140, 95626), (274, 48860), (280, 47813), (349, 38360), (548, 24430), (685, 19544), (698, 19180), (959, 13960), (1096, 12215), (1370, 9772), (1396, 9590), (1745, 7672), (1918, 6980), (2443, 5480), (2740, 4886), (2792, 4795), (3490, 3836)]