20606805

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:148

約数の個数: 80

約数和(自身を含む): 40615344

約数和(自身を除く): 20008539

約数列:

[1, 3, 5, 9, 15, 17, 27, 41, 45, 51, 73, 81, 85, 123, 135, 153, 205, 219, 255, 365, 369, 405, 459, 615, 657, 697, 765, 1095, 1107, 1241, 1377, 1845, 1971, 2091, 2295, 2993, 3285, 3321, 3485, 3723, 5535, 5913, 6205, 6273, 6885, 8979, 9855, 10455, 11169, 14965, 16605, 18615, 18819, 26937, 29565, 31365, 33507, 44895, 50881, 55845, 56457, 80811, 94095, 100521, 134685, 152643, 167535, 242433, 254405, 282285, 404055, 457929, 502605, 763215, 1212165, 1373787, 2289645, 4121361, 6868935, 20606805]

約数ペア:

[(1, 20606805), (3, 6868935), (5, 4121361), (9, 2289645), (15, 1373787), (17, 1212165), (27, 763215), (41, 502605), (45, 457929), (51, 404055), (73, 282285), (81, 254405), (85, 242433), (123, 167535), (135, 152643), (153, 134685), (205, 100521), (219, 94095), (255, 80811), (365, 56457), (369, 55845), (405, 50881), (459, 44895), (615, 33507), (657, 31365), (697, 29565), (765, 26937), (1095, 18819), (1107, 18615), (1241, 16605), (1377, 14965), (1845, 11169), (1971, 10455), (2091, 9855), (2295, 8979), (2993, 6885), (3285, 6273), (3321, 6205), (3485, 5913), (3723, 5535)]