1856987775

素因数分解:

$3^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{17981}}^1$

素因数の和:18023

約数の個数: 72

約数和(自身を含む): 3652359984

約数和(自身を除く): 1795372209

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 135, 153, 225, 243, 255, 405, 425, 459, 675, 765, 1215, 1275, 1377, 2025, 2295, 3825, 4131, 6075, 6885, 11475, 17981, 20655, 34425, 53943, 89905, 103275, 161829, 269715, 305677, 449525, 485487, 809145, 917031, 1348575, 1456461, 1528385, 2427435, 2751093, 4045725, 4369383, 4585155, 7282305, 7641925, 8253279, 12137175, 13755465, 21846915, 22925775, 24759837, 36411525, 41266395, 68777325, 74279511, 109234575, 123799185, 206331975, 371397555, 618995925, 1856987775]

約数ペア:

[(1, 1856987775), (3, 618995925), (5, 371397555), (9, 206331975), (15, 123799185), (17, 109234575), (25, 74279511), (27, 68777325), (45, 41266395), (51, 36411525), (75, 24759837), (81, 22925775), (85, 21846915), (135, 13755465), (153, 12137175), (225, 8253279), (243, 7641925), (255, 7282305), (405, 4585155), (425, 4369383), (459, 4045725), (675, 2751093), (765, 2427435), (1215, 1528385), (1275, 1456461), (1377, 1348575), (2025, 917031), (2295, 809145), (3825, 485487), (4131, 449525), (6075, 305677), (6885, 269715), (11475, 161829), (17981, 103275), (20655, 89905), (34425, 53943)]