20806065

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:244

約数の個数: 80

約数和(自身を含む): 43908480

約数和(自身を除く): 23102415

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 41, 45, 63, 81, 105, 123, 135, 179, 189, 205, 287, 315, 369, 405, 537, 567, 615, 861, 895, 945, 1107, 1253, 1435, 1611, 1845, 2583, 2685, 2835, 3321, 3759, 4305, 4833, 5535, 6265, 7339, 7749, 8055, 11277, 12915, 14499, 16605, 18795, 22017, 23247, 24165, 33831, 36695, 38745, 51373, 56385, 66051, 72495, 101493, 110085, 116235, 154119, 169155, 198153, 256865, 330255, 462357, 507465, 594459, 770595, 990765, 1387071, 2311785, 2972295, 4161213, 6935355, 20806065]

約数ペア:

[(1, 20806065), (3, 6935355), (5, 4161213), (7, 2972295), (9, 2311785), (15, 1387071), (21, 990765), (27, 770595), (35, 594459), (41, 507465), (45, 462357), (63, 330255), (81, 256865), (105, 198153), (123, 169155), (135, 154119), (179, 116235), (189, 110085), (205, 101493), (287, 72495), (315, 66051), (369, 56385), (405, 51373), (537, 38745), (567, 36695), (615, 33831), (861, 24165), (895, 23247), (945, 22017), (1107, 18795), (1253, 16605), (1435, 14499), (1611, 12915), (1845, 11277), (2583, 8055), (2685, 7749), (2835, 7339), (3321, 6265), (3759, 5535), (4305, 4833)]