20505456

素因数分解:

$2^4\times 3^2\times {\mathrm{157}}^1\times {\mathrm{907}}^1$

素因数の和:1078

約数の個数: 60

約数和(自身を含む): 57815992

約数和(自身を除く): 37310536

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 157, 314, 471, 628, 907, 942, 1256, 1413, 1814, 1884, 2512, 2721, 2826, 3628, 3768, 5442, 5652, 7256, 7536, 8163, 10884, 11304, 14512, 16326, 21768, 22608, 32652, 43536, 65304, 130608, 142399, 284798, 427197, 569596, 854394, 1139192, 1281591, 1708788, 2278384, 2563182, 3417576, 5126364, 6835152, 10252728, 20505456]

約数ペア:

[(1, 20505456), (2, 10252728), (3, 6835152), (4, 5126364), (6, 3417576), (8, 2563182), (9, 2278384), (12, 1708788), (16, 1281591), (18, 1139192), (24, 854394), (36, 569596), (48, 427197), (72, 284798), (144, 142399), (157, 130608), (314, 65304), (471, 43536), (628, 32652), (907, 22608), (942, 21768), (1256, 16326), (1413, 14512), (1814, 11304), (1884, 10884), (2512, 8163), (2721, 7536), (2826, 7256), (3628, 5652), (3768, 5442)]