18735885

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{293}}^1$

素因数の和:347

約数の個数: 72

約数和(自身を含む): 39213720

約数和(自身を除く): 20477835

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 49, 63, 87, 105, 145, 147, 203, 245, 261, 293, 315, 435, 441, 609, 735, 879, 1015, 1305, 1421, 1465, 1827, 2051, 2205, 2637, 3045, 4263, 4395, 6153, 7105, 8497, 9135, 10255, 12789, 13185, 14357, 18459, 21315, 25491, 30765, 42485, 43071, 59479, 63945, 71785, 76473, 92295, 127455, 129213, 178437, 215355, 297395, 382365, 416353, 535311, 646065, 892185, 1249059, 2081765, 2676555, 3747177, 6245295, 18735885]

約数ペア:

[(1, 18735885), (3, 6245295), (5, 3747177), (7, 2676555), (9, 2081765), (15, 1249059), (21, 892185), (29, 646065), (35, 535311), (45, 416353), (49, 382365), (63, 297395), (87, 215355), (105, 178437), (145, 129213), (147, 127455), (203, 92295), (245, 76473), (261, 71785), (293, 63945), (315, 59479), (435, 43071), (441, 42485), (609, 30765), (735, 25491), (879, 21315), (1015, 18459), (1305, 14357), (1421, 13185), (1465, 12789), (1827, 10255), (2051, 9135), (2205, 8497), (2637, 7105), (3045, 6153), (4263, 4395)]