17438440

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2213}}^1$

素因数の和:2421

約数の個数: 32

約数和(自身を含む): 39453480

約数和(自身を除く): 22015040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2213, 3940, 4426, 7880, 8852, 11065, 17704, 22130, 44260, 88520, 435961, 871922, 1743844, 2179805, 3487688, 4359610, 8719220, 17438440]

約数ペア:

[(1, 17438440), (2, 8719220), (4, 4359610), (5, 3487688), (8, 2179805), (10, 1743844), (20, 871922), (40, 435961), (197, 88520), (394, 44260), (788, 22130), (985, 17704), (1576, 11065), (1970, 8852), (2213, 7880), (3940, 4426)]