21102525

素因数分解:

$3^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{613}}^1$

素因数の和:652

約数の個数: 60

約数和(自身を含む): 41456052

約数和(自身を除く): 20353527

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 135, 153, 225, 255, 405, 425, 459, 613, 675, 765, 1275, 1377, 1839, 2025, 2295, 3065, 3825, 5517, 6885, 9195, 10421, 11475, 15325, 16551, 27585, 31263, 34425, 45975, 49653, 52105, 82755, 93789, 137925, 156315, 248265, 260525, 281367, 413775, 468945, 781575, 844101, 1241325, 1406835, 2344725, 4220505, 7034175, 21102525]

約数ペア:

[(1, 21102525), (3, 7034175), (5, 4220505), (9, 2344725), (15, 1406835), (17, 1241325), (25, 844101), (27, 781575), (45, 468945), (51, 413775), (75, 281367), (81, 260525), (85, 248265), (135, 156315), (153, 137925), (225, 93789), (255, 82755), (405, 52105), (425, 49653), (459, 45975), (613, 34425), (675, 31263), (765, 27585), (1275, 16551), (1377, 15325), (1839, 11475), (2025, 10421), (2295, 9195), (3065, 6885), (3825, 5517)]