257681268

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28979}}^1$

素因数の和:29021

約数の個数: 72

約数和(自身を含む): 738410400

約数和(自身を除く): 480729132

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2964, 4446, 8892, 28979, 57958, 86937, 115916, 173874, 260811, 347748, 376727, 521622, 550601, 753454, 1043244, 1101202, 1130181, 1506908, 1651803, 2202404, 2260362, 3303606, 3390543, 4520724, 4955409, 6607212, 6781086, 7157813, 9910818, 13562172, 14315626, 19821636, 21473439, 28631252, 42946878, 64420317, 85893756, 128840634, 257681268]

約数ペア:

[(1, 257681268), (2, 128840634), (3, 85893756), (4, 64420317), (6, 42946878), (9, 28631252), (12, 21473439), (13, 19821636), (18, 14315626), (19, 13562172), (26, 9910818), (36, 7157813), (38, 6781086), (39, 6607212), (52, 4955409), (57, 4520724), (76, 3390543), (78, 3303606), (114, 2260362), (117, 2202404), (156, 1651803), (171, 1506908), (228, 1130181), (234, 1101202), (247, 1043244), (342, 753454), (468, 550601), (494, 521622), (684, 376727), (741, 347748), (988, 260811), (1482, 173874), (2223, 115916), (2964, 86937), (4446, 57958), (8892, 28979)]