256713660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2579}}^1$

素因数の和:2680

約数の個数: 144

約数和(自身を含む): 901555200

約数和(自身を除く): 644841540

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, 79, 84, 90, 105, 126, 140, 158, 180, 210, 237, 252, 315, 316, 395, 420, 474, 553, 630, 711, 790, 948, 1106, 1185, 1260, 1422, 1580, 1659, 2212, 2370, 2579, 2765, 2844, 3318, 3555, 4740, 4977, 5158, 5530, 6636, 7110, 7737, 8295, 9954, 10316, 11060, 12895, 14220, 15474, 16590, 18053, 19908, 23211, 24885, 25790, 30948, 33180, 36106, 38685, 46422, 49770, 51580, 54159, 72212, 77370, 90265, 92844, 99540, 108318, 116055, 154740, 162477, 180530, 203741, 216636, 232110, 270795, 324954, 361060, 407482, 464220, 541590, 611223, 649908, 812385, 814964, 1018705, 1083180, 1222446, 1426187, 1624770, 1833669, 2037410, 2444892, 2852374, 3056115, 3249540, 3667338, 4074820, 4278561, 5704748, 6112230, 7130935, 7334676, 8557122, 9168345, 12224460, 12835683, 14261870, 17114244, 18336690, 21392805, 25671366, 28523740, 36673380, 42785610, 51342732, 64178415, 85571220, 128356830, 256713660]

約数ペア:

[(1, 256713660), (2, 128356830), (3, 85571220), (4, 64178415), (5, 51342732), (6, 42785610), (7, 36673380), (9, 28523740), (10, 25671366), (12, 21392805), (14, 18336690), (15, 17114244), (18, 14261870), (20, 12835683), (21, 12224460), (28, 9168345), (30, 8557122), (35, 7334676), (36, 7130935), (42, 6112230), (45, 5704748), (60, 4278561), (63, 4074820), (70, 3667338), (79, 3249540), (84, 3056115), (90, 2852374), (105, 2444892), (126, 2037410), (140, 1833669), (158, 1624770), (180, 1426187), (210, 1222446), (237, 1083180), (252, 1018705), (315, 814964), (316, 812385), (395, 649908), (420, 611223), (474, 541590), (553, 464220), (630, 407482), (711, 361060), (790, 324954), (948, 270795), (1106, 232110), (1185, 216636), (1260, 203741), (1422, 180530), (1580, 162477), (1659, 154740), (2212, 116055), (2370, 108318), (2579, 99540), (2765, 92844), (2844, 90265), (3318, 77370), (3555, 72212), (4740, 54159), (4977, 51580), (5158, 49770), (5530, 46422), (6636, 38685), (7110, 36106), (7737, 33180), (8295, 30948), (9954, 25790), (10316, 24885), (11060, 23211), (12895, 19908), (14220, 18053), (15474, 16590)]