1269857720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{447133}}^1$

素因数の和:447215

約数の個数: 32

約数和(自身を含む): 2897428320

約数和(自身を除く): 1627570600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 447133, 894266, 1788532, 2235665, 3577064, 4471330, 8942660, 17885320, 31746443, 63492886, 126985772, 158732215, 253971544, 317464430, 634928860, 1269857720]

約数ペア:

[(1, 1269857720), (2, 634928860), (4, 317464430), (5, 253971544), (8, 158732215), (10, 126985772), (20, 63492886), (40, 31746443), (71, 17885320), (142, 8942660), (284, 4471330), (355, 3577064), (568, 2235665), (710, 1788532), (1420, 894266), (2840, 447133)]