127994560

素因数分解:

$2^6\times 5^1\times {\mathrm{399983}}^1$

素因数の和:400000

約数の個数: 28

約数和(自身を含む): 304787808

約数和(自身を除く): 176793248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 399983, 799966, 1599932, 1999915, 3199864, 3999830, 6399728, 7999660, 12799456, 15999320, 25598912, 31998640, 63997280, 127994560]

約数ペア:

[(1, 127994560), (2, 63997280), (4, 31998640), (5, 25598912), (8, 15999320), (10, 12799456), (16, 7999660), (20, 6399728), (32, 3999830), (40, 3199864), (64, 1999915), (80, 1599932), (160, 799966), (320, 399983)]