81978120

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{32531}}^1$

素因数の和:32555

約数の個数: 96

約数和(自身を含む): 304499520

約数和(自身を除く): 222521400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 32531, 65062, 97593, 130124, 162655, 195186, 227717, 260248, 292779, 325310, 390372, 455434, 487965, 585558, 650620, 683151, 780744, 910868, 975930, 1138585, 1171116, 1301240, 1366302, 1463895, 1821736, 1951860, 2049453, 2277170, 2342232, 2732604, 2927790, 3415755, 3903720, 4098906, 4554340, 5465208, 5855580, 6831510, 8197812, 9108680, 10247265, 11711160, 13663020, 16395624, 20494530, 27326040, 40989060, 81978120]

約数ペア:

[(1, 81978120), (2, 40989060), (3, 27326040), (4, 20494530), (5, 16395624), (6, 13663020), (7, 11711160), (8, 10247265), (9, 9108680), (10, 8197812), (12, 6831510), (14, 5855580), (15, 5465208), (18, 4554340), (20, 4098906), (21, 3903720), (24, 3415755), (28, 2927790), (30, 2732604), (35, 2342232), (36, 2277170), (40, 2049453), (42, 1951860), (45, 1821736), (56, 1463895), (60, 1366302), (63, 1301240), (70, 1171116), (72, 1138585), (84, 975930), (90, 910868), (105, 780744), (120, 683151), (126, 650620), (140, 585558), (168, 487965), (180, 455434), (210, 390372), (252, 325310), (280, 292779), (315, 260248), (360, 227717), (420, 195186), (504, 162655), (630, 130124), (840, 97593), (1260, 65062), (2520, 32531)]