398438964

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:291

約数の個数: 216

約数和(自身を含む): 1289695680

約数和(自身を除く): 891256716

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 73, 77, 84, 99, 121, 126, 132, 146, 154, 179, 198, 219, 231, 242, 252, 292, 308, 358, 363, 396, 438, 462, 484, 511, 537, 657, 693, 716, 726, 803, 847, 876, 924, 1022, 1074, 1089, 1253, 1314, 1386, 1452, 1533, 1606, 1611, 1694, 1969, 2044, 2148, 2178, 2409, 2506, 2541, 2628, 2772, 3066, 3212, 3222, 3388, 3759, 3938, 4356, 4599, 4818, 5012, 5082, 5621, 5907, 6132, 6444, 7227, 7518, 7623, 7876, 8833, 9198, 9636, 10164, 11242, 11277, 11814, 13067, 13783, 14454, 15036, 15246, 16863, 17666, 17721, 18396, 21659, 22484, 22554, 23628, 26134, 26499, 27566, 28908, 30492, 33726, 35332, 35442, 39201, 41349, 43318, 45108, 50589, 52268, 52998, 55132, 61831, 64977, 67452, 70884, 78402, 79497, 82698, 86636, 91469, 101178, 105996, 117603, 123662, 124047, 129954, 143737, 151613, 156804, 158994, 165396, 182938, 185493, 194931, 202356, 235206, 247324, 248094, 259908, 274407, 287474, 303226, 317988, 365876, 370986, 389862, 431211, 454839, 470412, 496188, 548814, 556479, 574948, 606452, 741972, 779724, 823221, 862422, 909678, 1006159, 1097628, 1112958, 1293633, 1364517, 1581107, 1646442, 1724844, 1819356, 2012318, 2225916, 2587266, 2729034, 3018477, 3162214, 3292884, 4024636, 4743321, 5174532, 5458068, 6036954, 6324428, 9055431, 9486642, 11067749, 12073908, 14229963, 18110862, 18973284, 22135498, 28459926, 33203247, 36221724, 44270996, 56919852, 66406494, 99609741, 132812988, 199219482, 398438964]

約数ペア:

[(1, 398438964), (2, 199219482), (3, 132812988), (4, 99609741), (6, 66406494), (7, 56919852), (9, 44270996), (11, 36221724), (12, 33203247), (14, 28459926), (18, 22135498), (21, 18973284), (22, 18110862), (28, 14229963), (33, 12073908), (36, 11067749), (42, 9486642), (44, 9055431), (63, 6324428), (66, 6036954), (73, 5458068), (77, 5174532), (84, 4743321), (99, 4024636), (121, 3292884), (126, 3162214), (132, 3018477), (146, 2729034), (154, 2587266), (179, 2225916), (198, 2012318), (219, 1819356), (231, 1724844), (242, 1646442), (252, 1581107), (292, 1364517), (308, 1293633), (358, 1112958), (363, 1097628), (396, 1006159), (438, 909678), (462, 862422), (484, 823221), (511, 779724), (537, 741972), (657, 606452), (693, 574948), (716, 556479), (726, 548814), (803, 496188), (847, 470412), (876, 454839), (924, 431211), (1022, 389862), (1074, 370986), (1089, 365876), (1253, 317988), (1314, 303226), (1386, 287474), (1452, 274407), (1533, 259908), (1606, 248094), (1611, 247324), (1694, 235206), (1969, 202356), (2044, 194931), (2148, 185493), (2178, 182938), (2409, 165396), (2506, 158994), (2541, 156804), (2628, 151613), (2772, 143737), (3066, 129954), (3212, 124047), (3222, 123662), (3388, 117603), (3759, 105996), (3938, 101178), (4356, 91469), (4599, 86636), (4818, 82698), (5012, 79497), (5082, 78402), (5621, 70884), (5907, 67452), (6132, 64977), (6444, 61831), (7227, 55132), (7518, 52998), (7623, 52268), (7876, 50589), (8833, 45108), (9198, 43318), (9636, 41349), (10164, 39201), (11242, 35442), (11277, 35332), (11814, 33726), (13067, 30492), (13783, 28908), (14454, 27566), (15036, 26499), (15246, 26134), (16863, 23628), (17666, 22554), (17721, 22484), (18396, 21659)]