21400875

素因数分解:

$3^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{373}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 42007680

約数和(自身を除く): 20606805

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 125, 135, 153, 225, 255, 373, 375, 425, 459, 675, 765, 1119, 1125, 1275, 1865, 2125, 2295, 3357, 3375, 3825, 5595, 6341, 6375, 9325, 10071, 11475, 16785, 19023, 19125, 27975, 31705, 46625, 50355, 57069, 57375, 83925, 95115, 139875, 158525, 171207, 251775, 285345, 419625, 475575, 792625, 856035, 1258875, 1426725, 2377875, 4280175, 7133625, 21400875]

約数ペア:

[(1, 21400875), (3, 7133625), (5, 4280175), (9, 2377875), (15, 1426725), (17, 1258875), (25, 856035), (27, 792625), (45, 475575), (51, 419625), (75, 285345), (85, 251775), (125, 171207), (135, 158525), (153, 139875), (225, 95115), (255, 83925), (373, 57375), (375, 57069), (425, 50355), (459, 46625), (675, 31705), (765, 27975), (1119, 19125), (1125, 19023), (1275, 16785), (1865, 11475), (2125, 10071), (2295, 9325), (3357, 6375), (3375, 6341), (3825, 5595)]