31391265

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{479}}^1$

素因数の和:761

約数の個数: 32

約数和(自身を含む): 53498880

約数和(自身を除く): 22107615

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 257, 479, 771, 1285, 1437, 2395, 3855, 4369, 7185, 8143, 13107, 21845, 24429, 40715, 65535, 122145, 123103, 369309, 615515, 1846545, 2092751, 6278253, 10463755, 31391265]

約数ペア:

[(1, 31391265), (3, 10463755), (5, 6278253), (15, 2092751), (17, 1846545), (51, 615515), (85, 369309), (255, 123103), (257, 122145), (479, 65535), (771, 40715), (1285, 24429), (1437, 21845), (2395, 13107), (3855, 8143), (4369, 7185)]