654040

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 1496880

約数和(自身を除く): 842840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 197, 332, 394, 415, 664, 788, 830, 985, 1576, 1660, 1970, 3320, 3940, 7880, 16351, 32702, 65404, 81755, 130808, 163510, 327020, 654040]

約数ペア:

[(1, 654040), (2, 327020), (4, 163510), (5, 130808), (8, 81755), (10, 65404), (20, 32702), (40, 16351), (83, 7880), (166, 3940), (197, 3320), (332, 1970), (394, 1660), (415, 1576), (664, 985), (788, 830)]