20147810175

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{71809}}^1$

素因数の和:71897

約数の個数: 72

約数和(自身を含む): 38200047600

約数和(自身を除く): 18052237425

約数列:

[1, 3, 5, 9, 15, 25, 29, 43, 45, 75, 87, 129, 145, 215, 225, 261, 387, 435, 645, 725, 1075, 1247, 1305, 1935, 2175, 3225, 3741, 6235, 6525, 9675, 11223, 18705, 31175, 56115, 71809, 93525, 215427, 280575, 359045, 646281, 1077135, 1795225, 2082461, 3087787, 3231405, 5385675, 6247383, 9263361, 10412305, 15438935, 16157025, 18742149, 27790083, 31236915, 46316805, 52061525, 77194675, 89545823, 93710745, 138950415, 156184575, 231584025, 268637469, 447729115, 468553725, 694752075, 805912407, 1343187345, 2238645575, 4029562035, 6715936725, 20147810175]

約数ペア:

[(1, 20147810175), (3, 6715936725), (5, 4029562035), (9, 2238645575), (15, 1343187345), (25, 805912407), (29, 694752075), (43, 468553725), (45, 447729115), (75, 268637469), (87, 231584025), (129, 156184575), (145, 138950415), (215, 93710745), (225, 89545823), (261, 77194675), (387, 52061525), (435, 46316805), (645, 31236915), (725, 27790083), (1075, 18742149), (1247, 16157025), (1305, 15438935), (1935, 10412305), (2175, 9263361), (3225, 6247383), (3741, 5385675), (6235, 3231405), (6525, 3087787), (9675, 2082461), (11223, 1795225), (18705, 1077135), (31175, 646281), (56115, 359045), (71809, 280575), (93525, 215427)]