16521705

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:367

約数の個数: 64

約数和(自身を含む): 32555520

約数和(自身を除く): 16033815

約数列:

[1, 3, 5, 9, 15, 17, 23, 27, 45, 51, 69, 85, 115, 135, 153, 207, 255, 313, 345, 391, 459, 621, 765, 939, 1035, 1173, 1565, 1955, 2295, 2817, 3105, 3519, 4695, 5321, 5865, 7199, 8451, 10557, 14085, 15963, 17595, 21597, 26605, 35995, 42255, 47889, 52785, 64791, 79815, 107985, 122383, 143667, 194373, 239445, 323955, 367149, 611915, 718335, 971865, 1101447, 1835745, 3304341, 5507235, 16521705]

約数ペア:

[(1, 16521705), (3, 5507235), (5, 3304341), (9, 1835745), (15, 1101447), (17, 971865), (23, 718335), (27, 611915), (45, 367149), (51, 323955), (69, 239445), (85, 194373), (115, 143667), (135, 122383), (153, 107985), (207, 79815), (255, 64791), (313, 52785), (345, 47889), (391, 42255), (459, 35995), (621, 26605), (765, 21597), (939, 17595), (1035, 15963), (1173, 14085), (1565, 10557), (1955, 8451), (2295, 7199), (2817, 5865), (3105, 5321), (3519, 4695)]