215566640

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{26161}}^1$

素因数の和:26277

約数の個数: 40

約数和(自身を含む): 506077728

約数和(自身を除く): 290511088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 4120, 8240, 26161, 52322, 104644, 130805, 209288, 261610, 418576, 523220, 1046440, 2092880, 2694583, 5389166, 10778332, 13472915, 21556664, 26945830, 43113328, 53891660, 107783320, 215566640]

約数ペア:

[(1, 215566640), (2, 107783320), (4, 53891660), (5, 43113328), (8, 26945830), (10, 21556664), (16, 13472915), (20, 10778332), (40, 5389166), (80, 2694583), (103, 2092880), (206, 1046440), (412, 523220), (515, 418576), (824, 261610), (1030, 209288), (1648, 130805), (2060, 104644), (4120, 52322), (8240, 26161)]