19778031

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 39137280

約数和(自身を除く): 19359249

約数列:

[1, 3, 7, 9, 13, 19, 21, 31, 39, 41, 57, 63, 91, 93, 117, 123, 133, 171, 217, 247, 273, 279, 287, 369, 399, 403, 533, 589, 651, 741, 779, 819, 861, 1197, 1209, 1271, 1599, 1729, 1767, 1953, 2223, 2337, 2583, 2821, 3627, 3731, 3813, 4123, 4797, 5187, 5301, 5453, 7011, 7657, 8463, 8897, 10127, 11193, 11439, 12369, 15561, 16359, 16523, 22971, 24149, 25389, 26691, 30381, 33579, 37107, 49077, 49569, 53599, 68913, 70889, 72447, 80073, 91143, 115661, 148707, 160797, 169043, 212667, 217341, 313937, 346983, 482391, 507129, 638001, 941811, 1040949, 1521387, 2197559, 2825433, 6592677, 19778031]

約数ペア:

[(1, 19778031), (3, 6592677), (7, 2825433), (9, 2197559), (13, 1521387), (19, 1040949), (21, 941811), (31, 638001), (39, 507129), (41, 482391), (57, 346983), (63, 313937), (91, 217341), (93, 212667), (117, 169043), (123, 160797), (133, 148707), (171, 115661), (217, 91143), (247, 80073), (273, 72447), (279, 70889), (287, 68913), (369, 53599), (399, 49569), (403, 49077), (533, 37107), (589, 33579), (651, 30381), (741, 26691), (779, 25389), (819, 24149), (861, 22971), (1197, 16523), (1209, 16359), (1271, 15561), (1599, 12369), (1729, 11439), (1767, 11193), (1953, 10127), (2223, 8897), (2337, 8463), (2583, 7657), (2821, 7011), (3627, 5453), (3731, 5301), (3813, 5187), (4123, 4797)]