255256820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1009}}^1$

素因数の和:1177

約数の個数: 96

約数和(自身を含む): 665145600

約数和(自身を除く): 409888780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 139, 140, 182, 260, 278, 364, 455, 556, 695, 910, 973, 1009, 1390, 1807, 1820, 1946, 2018, 2780, 3614, 3892, 4036, 4865, 5045, 7063, 7228, 9035, 9730, 10090, 12649, 13117, 14126, 18070, 19460, 20180, 25298, 26234, 28252, 35315, 36140, 50596, 52468, 63245, 65585, 70630, 91819, 126490, 131170, 140251, 141260, 183638, 252980, 262340, 280502, 367276, 459095, 561004, 701255, 918190, 981757, 1402510, 1823263, 1836380, 1963514, 2805020, 3646526, 3927028, 4908785, 7293052, 9116315, 9817570, 12762841, 18232630, 19635140, 25525682, 36465260, 51051364, 63814205, 127628410, 255256820]

約数ペア:

[(1, 255256820), (2, 127628410), (4, 63814205), (5, 51051364), (7, 36465260), (10, 25525682), (13, 19635140), (14, 18232630), (20, 12762841), (26, 9817570), (28, 9116315), (35, 7293052), (52, 4908785), (65, 3927028), (70, 3646526), (91, 2805020), (130, 1963514), (139, 1836380), (140, 1823263), (182, 1402510), (260, 981757), (278, 918190), (364, 701255), (455, 561004), (556, 459095), (695, 367276), (910, 280502), (973, 262340), (1009, 252980), (1390, 183638), (1807, 141260), (1820, 140251), (1946, 131170), (2018, 126490), (2780, 91819), (3614, 70630), (3892, 65585), (4036, 63245), (4865, 52468), (5045, 50596), (7063, 36140), (7228, 35315), (9035, 28252), (9730, 26234), (10090, 25298), (12649, 20180), (13117, 19460), (14126, 18070)]