721880460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{2879}}^1$

素因数の和:3100

約数の個数: 144

約数和(自身を含む): 2515968000

約数和(自身を除く): 1794087540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 199, 210, 252, 315, 398, 420, 597, 630, 796, 995, 1194, 1260, 1393, 1791, 1990, 2388, 2786, 2879, 2985, 3582, 3980, 4179, 5572, 5758, 5970, 6965, 7164, 8358, 8637, 8955, 11516, 11940, 12537, 13930, 14395, 16716, 17274, 17910, 20153, 20895, 25074, 25911, 27860, 28790, 34548, 35820, 40306, 41790, 43185, 50148, 51822, 57580, 60459, 62685, 80612, 83580, 86370, 100765, 103644, 120918, 125370, 129555, 172740, 181377, 201530, 241836, 250740, 259110, 302295, 362754, 403060, 518220, 572921, 604590, 725508, 906885, 1145842, 1209180, 1718763, 1813770, 2291684, 2864605, 3437526, 3627540, 4010447, 5156289, 5729210, 6875052, 8020894, 8593815, 10312578, 11458420, 12031341, 16041788, 17187630, 20052235, 20625156, 24062682, 25781445, 34375260, 36094023, 40104470, 48125364, 51562890, 60156705, 72188046, 80208940, 103125780, 120313410, 144376092, 180470115, 240626820, 360940230, 721880460]

約数ペア:

[(1, 721880460), (2, 360940230), (3, 240626820), (4, 180470115), (5, 144376092), (6, 120313410), (7, 103125780), (9, 80208940), (10, 72188046), (12, 60156705), (14, 51562890), (15, 48125364), (18, 40104470), (20, 36094023), (21, 34375260), (28, 25781445), (30, 24062682), (35, 20625156), (36, 20052235), (42, 17187630), (45, 16041788), (60, 12031341), (63, 11458420), (70, 10312578), (84, 8593815), (90, 8020894), (105, 6875052), (126, 5729210), (140, 5156289), (180, 4010447), (199, 3627540), (210, 3437526), (252, 2864605), (315, 2291684), (398, 1813770), (420, 1718763), (597, 1209180), (630, 1145842), (796, 906885), (995, 725508), (1194, 604590), (1260, 572921), (1393, 518220), (1791, 403060), (1990, 362754), (2388, 302295), (2786, 259110), (2879, 250740), (2985, 241836), (3582, 201530), (3980, 181377), (4179, 172740), (5572, 129555), (5758, 125370), (5970, 120918), (6965, 103644), (7164, 100765), (8358, 86370), (8637, 83580), (8955, 80612), (11516, 62685), (11940, 60459), (12537, 57580), (13930, 51822), (14395, 50148), (16716, 43185), (17274, 41790), (17910, 40306), (20153, 35820), (20895, 34548), (25074, 28790), (25911, 27860)]