20759805

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2467}}^1$

素因数の和:2506

約数の個数: 48

約数和(自身を含む): 41580864

約数和(自身を除く): 20821059

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 45, 51, 55, 85, 99, 153, 165, 187, 255, 495, 561, 765, 935, 1683, 2467, 2805, 7401, 8415, 12335, 22203, 27137, 37005, 41939, 81411, 111015, 125817, 135685, 209695, 244233, 377451, 407055, 461329, 629085, 1221165, 1383987, 1887255, 2306645, 4151961, 6919935, 20759805]

約数ペア:

[(1, 20759805), (3, 6919935), (5, 4151961), (9, 2306645), (11, 1887255), (15, 1383987), (17, 1221165), (33, 629085), (45, 461329), (51, 407055), (55, 377451), (85, 244233), (99, 209695), (153, 135685), (165, 125817), (187, 111015), (255, 81411), (495, 41939), (561, 37005), (765, 27137), (935, 22203), (1683, 12335), (2467, 8415), (2805, 7401)]