17871280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 49871808

約数和(自身を除く): 32000528

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 49, 56, 70, 80, 94, 97, 98, 112, 140, 188, 194, 196, 235, 245, 280, 329, 376, 388, 392, 470, 485, 490, 560, 658, 679, 752, 776, 784, 940, 970, 980, 1316, 1358, 1552, 1645, 1880, 1940, 1960, 2303, 2632, 2716, 3290, 3395, 3760, 3880, 3920, 4559, 4606, 4753, 5264, 5432, 6580, 6790, 7760, 9118, 9212, 9506, 10864, 11515, 13160, 13580, 18236, 18424, 19012, 22795, 23030, 23765, 26320, 27160, 31913, 36472, 36848, 38024, 45590, 46060, 47530, 54320, 63826, 72944, 76048, 91180, 92120, 95060, 127652, 159565, 182360, 184240, 190120, 223391, 255304, 319130, 364720, 380240, 446782, 510608, 638260, 893564, 1116955, 1276520, 1787128, 2233910, 2553040, 3574256, 4467820, 8935640, 17871280]

約数ペア:

[(1, 17871280), (2, 8935640), (4, 4467820), (5, 3574256), (7, 2553040), (8, 2233910), (10, 1787128), (14, 1276520), (16, 1116955), (20, 893564), (28, 638260), (35, 510608), (40, 446782), (47, 380240), (49, 364720), (56, 319130), (70, 255304), (80, 223391), (94, 190120), (97, 184240), (98, 182360), (112, 159565), (140, 127652), (188, 95060), (194, 92120), (196, 91180), (235, 76048), (245, 72944), (280, 63826), (329, 54320), (376, 47530), (388, 46060), (392, 45590), (470, 38024), (485, 36848), (490, 36472), (560, 31913), (658, 27160), (679, 26320), (752, 23765), (776, 23030), (784, 22795), (940, 19012), (970, 18424), (980, 18236), (1316, 13580), (1358, 13160), (1552, 11515), (1645, 10864), (1880, 9506), (1940, 9212), (1960, 9118), (2303, 7760), (2632, 6790), (2716, 6580), (3290, 5432), (3395, 5264), (3760, 4753), (3880, 4606), (3920, 4559)]