17861985

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 34594560

約数和(自身を除く): 16732575

約数列:

[1, 3, 5, 9, 15, 17, 27, 43, 45, 51, 85, 129, 135, 153, 181, 215, 255, 387, 459, 543, 645, 731, 765, 905, 1161, 1629, 1935, 2193, 2295, 2715, 3077, 3655, 4887, 5805, 6579, 7783, 8145, 9231, 10965, 15385, 19737, 23349, 24435, 27693, 32895, 38915, 46155, 70047, 83079, 98685, 116745, 132311, 138465, 210141, 350235, 396933, 415395, 661555, 1050705, 1190799, 1984665, 3572397, 5953995, 17861985]

約数ペア:

[(1, 17861985), (3, 5953995), (5, 3572397), (9, 1984665), (15, 1190799), (17, 1050705), (27, 661555), (43, 415395), (45, 396933), (51, 350235), (85, 210141), (129, 138465), (135, 132311), (153, 116745), (181, 98685), (215, 83079), (255, 70047), (387, 46155), (459, 38915), (543, 32895), (645, 27693), (731, 24435), (765, 23349), (905, 19737), (1161, 15385), (1629, 10965), (1935, 9231), (2193, 8145), (2295, 7783), (2715, 6579), (3077, 5805), (3655, 4887)]