338712500

素因数分解:

$2^2\times 5^5\times 7^3\times {\mathrm{79}}^1$

素因数の和:129

約数の個数: 144

約数和(自身を含む): 874944000

約数和(自身を除く): 536231500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 79, 98, 100, 125, 140, 158, 175, 196, 245, 250, 316, 343, 350, 395, 490, 500, 553, 625, 686, 700, 790, 875, 980, 1106, 1225, 1250, 1372, 1580, 1715, 1750, 1975, 2212, 2450, 2500, 2765, 3125, 3430, 3500, 3871, 3950, 4375, 4900, 5530, 6125, 6250, 6860, 7742, 7900, 8575, 8750, 9875, 11060, 12250, 12500, 13825, 15484, 17150, 17500, 19355, 19750, 21875, 24500, 27097, 27650, 30625, 34300, 38710, 39500, 42875, 43750, 49375, 54194, 55300, 61250, 69125, 77420, 85750, 87500, 96775, 98750, 108388, 122500, 135485, 138250, 153125, 171500, 193550, 197500, 214375, 246875, 270970, 276500, 306250, 345625, 387100, 428750, 483875, 493750, 541940, 612500, 677425, 691250, 857500, 967750, 987500, 1071875, 1354850, 1382500, 1728125, 1935500, 2143750, 2419375, 2709700, 3387125, 3456250, 4287500, 4838750, 6774250, 6912500, 9677500, 12096875, 13548500, 16935625, 24193750, 33871250, 48387500, 67742500, 84678125, 169356250, 338712500]

約数ペア:

[(1, 338712500), (2, 169356250), (4, 84678125), (5, 67742500), (7, 48387500), (10, 33871250), (14, 24193750), (20, 16935625), (25, 13548500), (28, 12096875), (35, 9677500), (49, 6912500), (50, 6774250), (70, 4838750), (79, 4287500), (98, 3456250), (100, 3387125), (125, 2709700), (140, 2419375), (158, 2143750), (175, 1935500), (196, 1728125), (245, 1382500), (250, 1354850), (316, 1071875), (343, 987500), (350, 967750), (395, 857500), (490, 691250), (500, 677425), (553, 612500), (625, 541940), (686, 493750), (700, 483875), (790, 428750), (875, 387100), (980, 345625), (1106, 306250), (1225, 276500), (1250, 270970), (1372, 246875), (1580, 214375), (1715, 197500), (1750, 193550), (1975, 171500), (2212, 153125), (2450, 138250), (2500, 135485), (2765, 122500), (3125, 108388), (3430, 98750), (3500, 96775), (3871, 87500), (3950, 85750), (4375, 77420), (4900, 69125), (5530, 61250), (6125, 55300), (6250, 54194), (6860, 49375), (7742, 43750), (7900, 42875), (8575, 39500), (8750, 38710), (9875, 34300), (11060, 30625), (12250, 27650), (12500, 27097), (13825, 24500), (15484, 21875), (17150, 19750), (17500, 19355)]