71646575

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 121710960

約数和(自身を除く): 50064385

約数列:

[1, 5, 7, 11, 13, 25, 35, 49, 55, 65, 77, 91, 143, 175, 245, 275, 325, 385, 409, 455, 539, 637, 715, 1001, 1225, 1925, 2045, 2275, 2695, 2863, 3185, 3575, 4499, 5005, 5317, 7007, 10225, 13475, 14315, 15925, 20041, 22495, 25025, 26585, 31493, 35035, 37219, 58487, 71575, 100205, 112475, 132925, 157465, 175175, 186095, 220451, 260533, 292435, 409409, 501025, 787325, 930475, 1102255, 1302665, 1462175, 2047045, 2865863, 5511275, 6513325, 10235225, 14329315, 71646575]

約数ペア:

[(1, 71646575), (5, 14329315), (7, 10235225), (11, 6513325), (13, 5511275), (25, 2865863), (35, 2047045), (49, 1462175), (55, 1302665), (65, 1102255), (77, 930475), (91, 787325), (143, 501025), (175, 409409), (245, 292435), (275, 260533), (325, 220451), (385, 186095), (409, 175175), (455, 157465), (539, 132925), (637, 112475), (715, 100205), (1001, 71575), (1225, 58487), (1925, 37219), (2045, 35035), (2275, 31493), (2695, 26585), (2863, 25025), (3185, 22495), (3575, 20041), (4499, 15925), (5005, 14315), (5317, 13475), (7007, 10225)]