128689990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2903}}^1$

素因数の和:2965

約数の個数: 64

約数和(自身を含む): 281014272

約数和(自身を除く): 152324282

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 31, 55, 62, 65, 110, 130, 143, 155, 286, 310, 341, 403, 682, 715, 806, 1430, 1705, 2015, 2903, 3410, 4030, 4433, 5806, 8866, 14515, 22165, 29030, 31933, 37739, 44330, 63866, 75478, 89993, 159665, 179986, 188695, 319330, 377390, 415129, 449965, 830258, 899930, 989923, 1169909, 1979846, 2075645, 2339818, 4151290, 4949615, 5849545, 9899230, 11699090, 12868999, 25737998, 64344995, 128689990]

約数ペア:

[(1, 128689990), (2, 64344995), (5, 25737998), (10, 12868999), (11, 11699090), (13, 9899230), (22, 5849545), (26, 4949615), (31, 4151290), (55, 2339818), (62, 2075645), (65, 1979846), (110, 1169909), (130, 989923), (143, 899930), (155, 830258), (286, 449965), (310, 415129), (341, 377390), (403, 319330), (682, 188695), (715, 179986), (806, 159665), (1430, 89993), (1705, 75478), (2015, 63866), (2903, 44330), (3410, 37739), (4030, 31933), (4433, 29030), (5806, 22165), (8866, 14515)]