19815404

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:367

約数の個数: 72

約数和(自身を含む): 45102960

約数和(自身を除く): 25287556

約数列:

[1, 2, 4, 7, 14, 17, 19, 28, 34, 38, 49, 68, 76, 98, 119, 133, 196, 238, 266, 313, 323, 476, 532, 626, 646, 833, 931, 1252, 1292, 1666, 1862, 2191, 2261, 3332, 3724, 4382, 4522, 5321, 5947, 8764, 9044, 10642, 11894, 15337, 15827, 21284, 23788, 30674, 31654, 37247, 41629, 61348, 63308, 74494, 83258, 101099, 148988, 166516, 202198, 260729, 291403, 404396, 521458, 582806, 707693, 1042916, 1165612, 1415386, 2830772, 4953851, 9907702, 19815404]

約数ペア:

[(1, 19815404), (2, 9907702), (4, 4953851), (7, 2830772), (14, 1415386), (17, 1165612), (19, 1042916), (28, 707693), (34, 582806), (38, 521458), (49, 404396), (68, 291403), (76, 260729), (98, 202198), (119, 166516), (133, 148988), (196, 101099), (238, 83258), (266, 74494), (313, 63308), (323, 61348), (476, 41629), (532, 37247), (626, 31654), (646, 30674), (833, 23788), (931, 21284), (1252, 15827), (1292, 15337), (1666, 11894), (1862, 10642), (2191, 9044), (2261, 8764), (3332, 5947), (3724, 5321), (4382, 4522)]