19955754

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:193

約数の個数: 128

約数和(自身を含む): 56770560

約数和(自身を除く): 36814806

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 31, 39, 42, 54, 62, 63, 78, 91, 93, 117, 126, 131, 182, 186, 189, 217, 234, 262, 273, 279, 351, 378, 393, 403, 434, 546, 558, 651, 702, 786, 806, 819, 837, 917, 1179, 1209, 1302, 1638, 1674, 1703, 1834, 1953, 2358, 2418, 2457, 2751, 2821, 3406, 3537, 3627, 3906, 4061, 4914, 5109, 5502, 5642, 5859, 7074, 7254, 8122, 8253, 8463, 10218, 10881, 11718, 11921, 12183, 15327, 16506, 16926, 21762, 23842, 24366, 24759, 25389, 28427, 30654, 35763, 36549, 45981, 49518, 50778, 52793, 56854, 71526, 73098, 76167, 85281, 91962, 105586, 107289, 109647, 152334, 158379, 170562, 214578, 219294, 255843, 316758, 321867, 369551, 475137, 511686, 643734, 739102, 767529, 950274, 1108653, 1425411, 1535058, 2217306, 2850822, 3325959, 6651918, 9977877, 19955754]

約数ペア:

[(1, 19955754), (2, 9977877), (3, 6651918), (6, 3325959), (7, 2850822), (9, 2217306), (13, 1535058), (14, 1425411), (18, 1108653), (21, 950274), (26, 767529), (27, 739102), (31, 643734), (39, 511686), (42, 475137), (54, 369551), (62, 321867), (63, 316758), (78, 255843), (91, 219294), (93, 214578), (117, 170562), (126, 158379), (131, 152334), (182, 109647), (186, 107289), (189, 105586), (217, 91962), (234, 85281), (262, 76167), (273, 73098), (279, 71526), (351, 56854), (378, 52793), (393, 50778), (403, 49518), (434, 45981), (546, 36549), (558, 35763), (651, 30654), (702, 28427), (786, 25389), (806, 24759), (819, 24366), (837, 23842), (917, 21762), (1179, 16926), (1209, 16506), (1302, 15327), (1638, 12183), (1674, 11921), (1703, 11718), (1834, 10881), (1953, 10218), (2358, 8463), (2418, 8253), (2457, 8122), (2751, 7254), (2821, 7074), (3406, 5859), (3537, 5642), (3627, 5502), (3906, 5109), (4061, 4914)]