78874160

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:366

約数の個数: 80

約数和(自身を含む): 190300320

約数和(自身を除く): 111426160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 139, 164, 173, 205, 278, 328, 346, 410, 556, 656, 692, 695, 820, 865, 1112, 1384, 1390, 1640, 1730, 2224, 2768, 2780, 3280, 3460, 5560, 5699, 6920, 7093, 11120, 11398, 13840, 14186, 22796, 24047, 28372, 28495, 35465, 45592, 48094, 56744, 56990, 70930, 91184, 96188, 113488, 113980, 120235, 141860, 192376, 227960, 240470, 283720, 384752, 455920, 480940, 567440, 961880, 985927, 1923760, 1971854, 3943708, 4929635, 7887416, 9859270, 15774832, 19718540, 39437080, 78874160]

約数ペア:

[(1, 78874160), (2, 39437080), (4, 19718540), (5, 15774832), (8, 9859270), (10, 7887416), (16, 4929635), (20, 3943708), (40, 1971854), (41, 1923760), (80, 985927), (82, 961880), (139, 567440), (164, 480940), (173, 455920), (205, 384752), (278, 283720), (328, 240470), (346, 227960), (410, 192376), (556, 141860), (656, 120235), (692, 113980), (695, 113488), (820, 96188), (865, 91184), (1112, 70930), (1384, 56990), (1390, 56744), (1640, 48094), (1730, 45592), (2224, 35465), (2768, 28495), (2780, 28372), (3280, 24047), (3460, 22796), (5560, 14186), (5699, 13840), (6920, 11398), (7093, 11120)]