19688805

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{373}}^1$

素因数の和:427

約数の個数: 64

約数和(自身を含む): 38776320

約数和(自身を除く): 19087515

約数列:

[1, 3, 5, 9, 15, 17, 23, 27, 45, 51, 69, 85, 115, 135, 153, 207, 255, 345, 373, 391, 459, 621, 765, 1035, 1119, 1173, 1865, 1955, 2295, 3105, 3357, 3519, 5595, 5865, 6341, 8579, 10071, 10557, 16785, 17595, 19023, 25737, 31705, 42895, 50355, 52785, 57069, 77211, 95115, 128685, 145843, 171207, 231633, 285345, 386055, 437529, 729215, 856035, 1158165, 1312587, 2187645, 3937761, 6562935, 19688805]

約数ペア:

[(1, 19688805), (3, 6562935), (5, 3937761), (9, 2187645), (15, 1312587), (17, 1158165), (23, 856035), (27, 729215), (45, 437529), (51, 386055), (69, 285345), (85, 231633), (115, 171207), (135, 145843), (153, 128685), (207, 95115), (255, 77211), (345, 57069), (373, 52785), (391, 50355), (459, 42895), (621, 31705), (765, 25737), (1035, 19023), (1119, 17595), (1173, 16785), (1865, 10557), (1955, 10071), (2295, 8579), (3105, 6341), (3357, 5865), (3519, 5595)]