201616720

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{18131}}^1$

素因数の和:18283

約数の個数: 40

約数和(自身を含む): 472157280

約数和(自身を除く): 270540560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 18131, 36262, 72524, 90655, 145048, 181310, 290096, 362620, 725240, 1450480, 2520209, 5040418, 10080836, 12601045, 20161672, 25202090, 40323344, 50404180, 100808360, 201616720]

約数ペア:

[(1, 201616720), (2, 100808360), (4, 50404180), (5, 40323344), (8, 25202090), (10, 20161672), (16, 12601045), (20, 10080836), (40, 5040418), (80, 2520209), (139, 1450480), (278, 725240), (556, 362620), (695, 290096), (1112, 181310), (1390, 145048), (2224, 90655), (2780, 72524), (5560, 36262), (11120, 18131)]