261469208

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{317}}^1$

素因数の和:457

約数の個数: 128

約数和(自身を含む): 666731520

約数和(自身を除く): 405262312

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 103, 104, 143, 154, 182, 206, 286, 308, 317, 364, 412, 572, 616, 634, 721, 728, 824, 1001, 1133, 1144, 1268, 1339, 1442, 2002, 2219, 2266, 2536, 2678, 2884, 3487, 4004, 4121, 4438, 4532, 5356, 5768, 6974, 7931, 8008, 8242, 8876, 9064, 9373, 10712, 13948, 14729, 15862, 16484, 17752, 18746, 24409, 27896, 28847, 29458, 31724, 32651, 32968, 37492, 45331, 48818, 57694, 58916, 63448, 65302, 74984, 90662, 97636, 103103, 115388, 117832, 130604, 181324, 195272, 206206, 228557, 230776, 261208, 317317, 359161, 362648, 412412, 424463, 457114, 634634, 718322, 824824, 848926, 914228, 1269268, 1436644, 1697852, 1828456, 2514127, 2538536, 2873288, 2971241, 3395704, 4669093, 5028254, 5942482, 9338186, 10056508, 11884964, 18676372, 20113016, 23769928, 32683651, 37352744, 65367302, 130734604, 261469208]

約数ペア:

[(1, 261469208), (2, 130734604), (4, 65367302), (7, 37352744), (8, 32683651), (11, 23769928), (13, 20113016), (14, 18676372), (22, 11884964), (26, 10056508), (28, 9338186), (44, 5942482), (52, 5028254), (56, 4669093), (77, 3395704), (88, 2971241), (91, 2873288), (103, 2538536), (104, 2514127), (143, 1828456), (154, 1697852), (182, 1436644), (206, 1269268), (286, 914228), (308, 848926), (317, 824824), (364, 718322), (412, 634634), (572, 457114), (616, 424463), (634, 412412), (721, 362648), (728, 359161), (824, 317317), (1001, 261208), (1133, 230776), (1144, 228557), (1268, 206206), (1339, 195272), (1442, 181324), (2002, 130604), (2219, 117832), (2266, 115388), (2536, 103103), (2678, 97636), (2884, 90662), (3487, 74984), (4004, 65302), (4121, 63448), (4438, 58916), (4532, 57694), (5356, 48818), (5768, 45331), (6974, 37492), (7931, 32968), (8008, 32651), (8242, 31724), (8876, 29458), (9064, 28847), (9373, 27896), (10712, 24409), (13948, 18746), (14729, 17752), (15862, 16484)]