21444225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 41559840

約数和(自身を除く): 20115615

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 121, 139, 165, 187, 255, 275, 363, 417, 425, 561, 605, 695, 825, 935, 1275, 1529, 1815, 2057, 2085, 2363, 2805, 3025, 3475, 4587, 4675, 6171, 7089, 7645, 9075, 10285, 10425, 11815, 14025, 16819, 22935, 25993, 30855, 35445, 38225, 50457, 51425, 59075, 77979, 84095, 114675, 129965, 154275, 177225, 252285, 285923, 389895, 420475, 649825, 857769, 1261425, 1429615, 1949475, 4288845, 7148075, 21444225]

約数ペア:

[(1, 21444225), (3, 7148075), (5, 4288845), (11, 1949475), (15, 1429615), (17, 1261425), (25, 857769), (33, 649825), (51, 420475), (55, 389895), (75, 285923), (85, 252285), (121, 177225), (139, 154275), (165, 129965), (187, 114675), (255, 84095), (275, 77979), (363, 59075), (417, 51425), (425, 50457), (561, 38225), (605, 35445), (695, 30855), (825, 25993), (935, 22935), (1275, 16819), (1529, 14025), (1815, 11815), (2057, 10425), (2085, 10285), (2363, 9075), (2805, 7645), (3025, 7089), (3475, 6171), (4587, 4675)]