687079780

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:337

約数の個数: 72

約数和(自身を含む): 1499117760

約数和(自身を除く): 812037980

約数列:

[1, 2, 4, 5, 10, 20, 59, 71, 118, 139, 142, 236, 278, 284, 295, 355, 556, 590, 695, 710, 1180, 1390, 1420, 2780, 3481, 4189, 6962, 8201, 8378, 9869, 13924, 16402, 16756, 17405, 19738, 20945, 32804, 34810, 39476, 41005, 41890, 49345, 69620, 82010, 83780, 98690, 164020, 197380, 247151, 483859, 494302, 582271, 967718, 988604, 1164542, 1235755, 1935436, 2329084, 2419295, 2471510, 2911355, 4838590, 4943020, 5822710, 9677180, 11645420, 34353989, 68707978, 137415956, 171769945, 343539890, 687079780]

約数ペア:

[(1, 687079780), (2, 343539890), (4, 171769945), (5, 137415956), (10, 68707978), (20, 34353989), (59, 11645420), (71, 9677180), (118, 5822710), (139, 4943020), (142, 4838590), (236, 2911355), (278, 2471510), (284, 2419295), (295, 2329084), (355, 1935436), (556, 1235755), (590, 1164542), (695, 988604), (710, 967718), (1180, 582271), (1390, 494302), (1420, 483859), (2780, 247151), (3481, 197380), (4189, 164020), (6962, 98690), (8201, 83780), (8378, 82010), (9869, 69620), (13924, 49345), (16402, 41890), (16756, 41005), (17405, 39476), (19738, 34810), (20945, 32804)]