19500615

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{293}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 38102400

約数和(自身を除く): 18601785

約数列:

[1, 3, 5, 9, 15, 17, 27, 29, 45, 51, 85, 87, 135, 145, 153, 255, 261, 293, 435, 459, 493, 765, 783, 879, 1305, 1465, 1479, 2295, 2465, 2637, 3915, 4395, 4437, 4981, 7395, 7911, 8497, 13185, 13311, 14943, 22185, 24905, 25491, 39555, 42485, 44829, 66555, 74715, 76473, 127455, 134487, 144449, 224145, 229419, 382365, 433347, 672435, 722245, 1147095, 1300041, 2166735, 3900123, 6500205, 19500615]

約数ペア:

[(1, 19500615), (3, 6500205), (5, 3900123), (9, 2166735), (15, 1300041), (17, 1147095), (27, 722245), (29, 672435), (45, 433347), (51, 382365), (85, 229419), (87, 224145), (135, 144449), (145, 134487), (153, 127455), (255, 76473), (261, 74715), (293, 66555), (435, 44829), (459, 42485), (493, 39555), (765, 25491), (783, 24905), (879, 22185), (1305, 14943), (1465, 13311), (1479, 13185), (2295, 8497), (2465, 7911), (2637, 7395), (3915, 4981), (4395, 4437)]