42181640

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 98152560

約数和(自身を除く): 55970920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 101, 106, 197, 202, 212, 265, 394, 404, 424, 505, 530, 788, 808, 985, 1010, 1060, 1576, 1970, 2020, 2120, 3940, 4040, 5353, 7880, 10441, 10706, 19897, 20882, 21412, 26765, 39794, 41764, 42824, 52205, 53530, 79588, 83528, 99485, 104410, 107060, 159176, 198970, 208820, 214120, 397940, 417640, 795880, 1054541, 2109082, 4218164, 5272705, 8436328, 10545410, 21090820, 42181640]

約数ペア:

[(1, 42181640), (2, 21090820), (4, 10545410), (5, 8436328), (8, 5272705), (10, 4218164), (20, 2109082), (40, 1054541), (53, 795880), (101, 417640), (106, 397940), (197, 214120), (202, 208820), (212, 198970), (265, 159176), (394, 107060), (404, 104410), (424, 99485), (505, 83528), (530, 79588), (788, 53530), (808, 52205), (985, 42824), (1010, 41764), (1060, 39794), (1576, 26765), (1970, 21412), (2020, 20882), (2120, 19897), (3940, 10706), (4040, 10441), (5353, 7880)]