400640256

素因数分解:

$2^8\times 3^4\times {\mathrm{139}}^2$

素因数の和:306

約数の個数: 135

約数和(自身を含む): 1203293091

約数和(自身を除く): 802652835

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 81, 96, 108, 128, 139, 144, 162, 192, 216, 256, 278, 288, 324, 384, 417, 432, 556, 576, 648, 768, 834, 864, 1112, 1152, 1251, 1296, 1668, 1728, 2224, 2304, 2502, 2592, 3336, 3456, 3753, 4448, 5004, 5184, 6672, 6912, 7506, 8896, 10008, 10368, 11259, 13344, 15012, 17792, 19321, 20016, 20736, 22518, 26688, 30024, 35584, 38642, 40032, 45036, 53376, 57963, 60048, 77284, 80064, 90072, 106752, 115926, 120096, 154568, 160128, 173889, 180144, 231852, 240192, 309136, 320256, 347778, 360288, 463704, 480384, 521667, 618272, 695556, 720576, 927408, 960768, 1043334, 1236544, 1391112, 1441152, 1565001, 1854816, 2086668, 2473088, 2782224, 2882304, 3130002, 3709632, 4173336, 4946176, 5564448, 6260004, 7419264, 8346672, 11128896, 12520008, 14838528, 16693344, 22257792, 25040016, 33386688, 44515584, 50080032, 66773376, 100160064, 133546752, 200320128, 400640256]

約数ペア:

[(1, 400640256), (2, 200320128), (3, 133546752), (4, 100160064), (6, 66773376), (8, 50080032), (9, 44515584), (12, 33386688), (16, 25040016), (18, 22257792), (24, 16693344), (27, 14838528), (32, 12520008), (36, 11128896), (48, 8346672), (54, 7419264), (64, 6260004), (72, 5564448), (81, 4946176), (96, 4173336), (108, 3709632), (128, 3130002), (139, 2882304), (144, 2782224), (162, 2473088), (192, 2086668), (216, 1854816), (256, 1565001), (278, 1441152), (288, 1391112), (324, 1236544), (384, 1043334), (417, 960768), (432, 927408), (556, 720576), (576, 695556), (648, 618272), (768, 521667), (834, 480384), (864, 463704), (1112, 360288), (1152, 347778), (1251, 320256), (1296, 309136), (1668, 240192), (1728, 231852), (2224, 180144), (2304, 173889), (2502, 160128), (2592, 154568), (3336, 120096), (3456, 115926), (3753, 106752), (4448, 90072), (5004, 80064), (5184, 77284), (6672, 60048), (6912, 57963), (7506, 53376), (8896, 45036), (10008, 40032), (10368, 38642), (11259, 35584), (13344, 30024), (15012, 26688), (17792, 22518), (19321, 20736)]