20512128975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{1489}}^1$

素因数の和:1785

約数の個数: 96

約数和(自身を含む): 37247616000

約数和(自身を除く): 16735487025

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 71, 75, 195, 199, 213, 325, 355, 597, 923, 975, 995, 1065, 1489, 1775, 2587, 2769, 2985, 4467, 4615, 4975, 5325, 7445, 7761, 12935, 13845, 14129, 14925, 19357, 22335, 23075, 37225, 38805, 42387, 58071, 64675, 69225, 70645, 96785, 105719, 111675, 183677, 194025, 211935, 290355, 296311, 317157, 353225, 483925, 528595, 551031, 888933, 918385, 1059675, 1374347, 1451775, 1481555, 1585785, 2642975, 2755155, 3852043, 4123041, 4444665, 4591925, 6871735, 7407775, 7928925, 11556129, 13775775, 19260215, 20615205, 21038081, 22223325, 34358675, 57780645, 63114243, 96301075, 103076025, 105190405, 273495053, 288903225, 315571215, 525952025, 820485159, 1367475265, 1577856075, 4102425795, 6837376325, 20512128975]

約数ペア:

[(1, 20512128975), (3, 6837376325), (5, 4102425795), (13, 1577856075), (15, 1367475265), (25, 820485159), (39, 525952025), (65, 315571215), (71, 288903225), (75, 273495053), (195, 105190405), (199, 103076025), (213, 96301075), (325, 63114243), (355, 57780645), (597, 34358675), (923, 22223325), (975, 21038081), (995, 20615205), (1065, 19260215), (1489, 13775775), (1775, 11556129), (2587, 7928925), (2769, 7407775), (2985, 6871735), (4467, 4591925), (4615, 4444665), (4975, 4123041), (5325, 3852043), (7445, 2755155), (7761, 2642975), (12935, 1585785), (13845, 1481555), (14129, 1451775), (14925, 1374347), (19357, 1059675), (22335, 918385), (23075, 888933), (37225, 551031), (38805, 528595), (42387, 483925), (58071, 353225), (64675, 317157), (69225, 296311), (70645, 290355), (96785, 211935), (105719, 194025), (111675, 183677)]