19884645

素因数分解:

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

素因数の和:195

約数の個数: 72

約数和(自身を含む): 40229280

約数和(自身を除く): 20344635

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 45, 51, 55, 85, 99, 139, 153, 165, 187, 255, 289, 417, 495, 561, 695, 765, 867, 935, 1251, 1445, 1529, 1683, 2085, 2363, 2601, 2805, 3179, 4335, 4587, 6255, 7089, 7645, 8415, 9537, 11815, 13005, 13761, 15895, 21267, 22935, 25993, 28611, 35445, 40171, 47685, 68805, 77979, 106335, 120513, 129965, 143055, 200855, 233937, 361539, 389895, 441881, 602565, 1169685, 1325643, 1807695, 2209405, 3976929, 6628215, 19884645]

約数ペア:

[(1, 19884645), (3, 6628215), (5, 3976929), (9, 2209405), (11, 1807695), (15, 1325643), (17, 1169685), (33, 602565), (45, 441881), (51, 389895), (55, 361539), (85, 233937), (99, 200855), (139, 143055), (153, 129965), (165, 120513), (187, 106335), (255, 77979), (289, 68805), (417, 47685), (495, 40171), (561, 35445), (695, 28611), (765, 25993), (867, 22935), (935, 21267), (1251, 15895), (1445, 13761), (1529, 13005), (1683, 11815), (2085, 9537), (2363, 8415), (2601, 7645), (2805, 7089), (3179, 6255), (4335, 4587)]