72175990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1\times {\mathrm{439}}^1$

素因数の和:888

約数の個数: 32

約数和(自身を含む): 133721280

約数和(自身を除く): 61545290

約数列:

[1, 2, 5, 10, 41, 82, 205, 401, 410, 439, 802, 878, 2005, 2195, 4010, 4390, 16441, 17999, 32882, 35998, 82205, 89995, 164410, 176039, 179990, 352078, 880195, 1760390, 7217599, 14435198, 36087995, 72175990]

約数ペア:

[(1, 72175990), (2, 36087995), (5, 14435198), (10, 7217599), (41, 1760390), (82, 880195), (205, 352078), (401, 179990), (410, 176039), (439, 164410), (802, 89995), (878, 82205), (2005, 35998), (2195, 32882), (4010, 17999), (4390, 16441)]