1284440

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 2922480

約数和(自身を除く): 1638040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 197, 326, 394, 652, 788, 815, 985, 1304, 1576, 1630, 1970, 3260, 3940, 6520, 7880, 32111, 64222, 128444, 160555, 256888, 321110, 642220, 1284440]

約数ペア:

[(1, 1284440), (2, 642220), (4, 321110), (5, 256888), (8, 160555), (10, 128444), (20, 64222), (40, 32111), (163, 7880), (197, 6520), (326, 3940), (394, 3260), (652, 1970), (788, 1630), (815, 1576), (985, 1304)]