71491888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:242

約数の個数: 80

約数和(自身を含む): 155990016

約数和(自身を除く): 84498128

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 71, 94, 103, 104, 142, 188, 206, 208, 284, 376, 412, 568, 611, 752, 824, 923, 1136, 1222, 1339, 1648, 1846, 2444, 2678, 3337, 3692, 4841, 4888, 5356, 6674, 7313, 7384, 9682, 9776, 10712, 13348, 14626, 14768, 19364, 21424, 26696, 29252, 38728, 43381, 53392, 58504, 62933, 77456, 86762, 95069, 117008, 125866, 173524, 190138, 251732, 343711, 347048, 380276, 503464, 687422, 694096, 760552, 1006928, 1374844, 1521104, 2749688, 4468243, 5499376, 8936486, 17872972, 35745944, 71491888]

約数ペア:

[(1, 71491888), (2, 35745944), (4, 17872972), (8, 8936486), (13, 5499376), (16, 4468243), (26, 2749688), (47, 1521104), (52, 1374844), (71, 1006928), (94, 760552), (103, 694096), (104, 687422), (142, 503464), (188, 380276), (206, 347048), (208, 343711), (284, 251732), (376, 190138), (412, 173524), (568, 125866), (611, 117008), (752, 95069), (824, 86762), (923, 77456), (1136, 62933), (1222, 58504), (1339, 53392), (1648, 43381), (1846, 38728), (2444, 29252), (2678, 26696), (3337, 21424), (3692, 19364), (4841, 14768), (4888, 14626), (5356, 13348), (6674, 10712), (7313, 9776), (7384, 9682)]