17980550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:246

約数の個数: 72

約数和(自身を含む): 40075560

約数和(自身を除く): 22095010

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 41, 49, 50, 70, 82, 98, 175, 179, 205, 245, 287, 350, 358, 410, 490, 574, 895, 1025, 1225, 1253, 1435, 1790, 2009, 2050, 2450, 2506, 2870, 4018, 4475, 6265, 7175, 7339, 8771, 8950, 10045, 12530, 14350, 14678, 17542, 20090, 31325, 36695, 43855, 50225, 51373, 62650, 73390, 87710, 100450, 102746, 183475, 219275, 256865, 359611, 366950, 438550, 513730, 719222, 1284325, 1798055, 2568650, 3596110, 8990275, 17980550]

約数ペア:

[(1, 17980550), (2, 8990275), (5, 3596110), (7, 2568650), (10, 1798055), (14, 1284325), (25, 719222), (35, 513730), (41, 438550), (49, 366950), (50, 359611), (70, 256865), (82, 219275), (98, 183475), (175, 102746), (179, 100450), (205, 87710), (245, 73390), (287, 62650), (350, 51373), (358, 50225), (410, 43855), (490, 36695), (574, 31325), (895, 20090), (1025, 17542), (1225, 14678), (1253, 14350), (1435, 12530), (1790, 10045), (2009, 8950), (2050, 8771), (2450, 7339), (2506, 7175), (2870, 6265), (4018, 4475)]