947778820

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{293}}^1\times {\mathrm{821}}^1$

素因数の和:1320

約数の個数: 48

約数和(自身を含む): 2009711088

約数和(自身を除く): 1061932268

約数列:

[1, 2, 4, 5, 10, 20, 197, 293, 394, 586, 788, 821, 985, 1172, 1465, 1642, 1970, 2930, 3284, 3940, 4105, 5860, 8210, 16420, 57721, 115442, 161737, 230884, 240553, 288605, 323474, 481106, 577210, 646948, 808685, 962212, 1154420, 1202765, 1617370, 2405530, 3234740, 4811060, 47388941, 94777882, 189555764, 236944705, 473889410, 947778820]

約数ペア:

[(1, 947778820), (2, 473889410), (4, 236944705), (5, 189555764), (10, 94777882), (20, 47388941), (197, 4811060), (293, 3234740), (394, 2405530), (586, 1617370), (788, 1202765), (821, 1154420), (985, 962212), (1172, 808685), (1465, 646948), (1642, 577210), (1970, 481106), (2930, 323474), (3284, 288605), (3940, 240553), (4105, 230884), (5860, 161737), (8210, 115442), (16420, 57721)]