205440320

素因数分解:

$2^6\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1601}}^1$

素因数の和:2019

約数の個数: 56

約数和(自身を含む): 490731048

約数和(自身を除く): 285290728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 401, 802, 1601, 1604, 2005, 3202, 3208, 4010, 6404, 6416, 8005, 8020, 12808, 12832, 16010, 16040, 25616, 25664, 32020, 32080, 51232, 64040, 64160, 102464, 128080, 128320, 256160, 512320, 642001, 1284002, 2568004, 3210005, 5136008, 6420010, 10272016, 12840020, 20544032, 25680040, 41088064, 51360080, 102720160, 205440320]

約数ペア:

[(1, 205440320), (2, 102720160), (4, 51360080), (5, 41088064), (8, 25680040), (10, 20544032), (16, 12840020), (20, 10272016), (32, 6420010), (40, 5136008), (64, 3210005), (80, 2568004), (160, 1284002), (320, 642001), (401, 512320), (802, 256160), (1601, 128320), (1604, 128080), (2005, 102464), (3202, 64160), (3208, 64040), (4010, 51232), (6404, 32080), (6416, 32020), (8005, 25664), (8020, 25616), (12808, 16040), (12832, 16010)]