19748475

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{1721}}^1$

素因数の和:1757

約数の個数: 48

約数和(自身を含む): 38435040

約数和(自身を除く): 18686565

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 135, 153, 225, 255, 425, 459, 675, 765, 1275, 1721, 2295, 3825, 5163, 8605, 11475, 15489, 25815, 29257, 43025, 46467, 77445, 87771, 129075, 146285, 232335, 263313, 387225, 438855, 731425, 789939, 1161675, 1316565, 2194275, 3949695, 6582825, 19748475]

約数ペア:

[(1, 19748475), (3, 6582825), (5, 3949695), (9, 2194275), (15, 1316565), (17, 1161675), (25, 789939), (27, 731425), (45, 438855), (51, 387225), (75, 263313), (85, 232335), (135, 146285), (153, 129075), (225, 87771), (255, 77445), (425, 46467), (459, 43025), (675, 29257), (765, 25815), (1275, 15489), (1721, 11475), (2295, 8605), (3825, 5163)]