21469725

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{1871}}^1$

素因数の和:1907

約数の個数: 48

約数和(自身を含む): 41783040

約数和(自身を除く): 20313315

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 135, 153, 225, 255, 425, 459, 675, 765, 1275, 1871, 2295, 3825, 5613, 9355, 11475, 16839, 28065, 31807, 46775, 50517, 84195, 95421, 140325, 159035, 252585, 286263, 420975, 477105, 795175, 858789, 1262925, 1431315, 2385525, 4293945, 7156575, 21469725]

約数ペア:

[(1, 21469725), (3, 7156575), (5, 4293945), (9, 2385525), (15, 1431315), (17, 1262925), (25, 858789), (27, 795175), (45, 477105), (51, 420975), (75, 286263), (85, 252585), (135, 159035), (153, 140325), (225, 95421), (255, 84195), (425, 50517), (459, 46775), (675, 31807), (765, 28065), (1275, 16839), (1871, 11475), (2295, 9355), (3825, 5613)]