12643720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7351}}^1$

素因数の和:7405

約数の個数: 32

約数和(自身を含む): 29113920

約数和(自身を除く): 16470200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 7351, 14702, 29404, 36755, 58808, 73510, 147020, 294040, 316093, 632186, 1264372, 1580465, 2528744, 3160930, 6321860, 12643720]

約数ペア:

[(1, 12643720), (2, 6321860), (4, 3160930), (5, 2528744), (8, 1580465), (10, 1264372), (20, 632186), (40, 316093), (43, 294040), (86, 147020), (172, 73510), (215, 58808), (344, 36755), (430, 29404), (860, 14702), (1720, 7351)]