221268621

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 362815488

約数和(自身を除く): 141546867

約数列:

[1, 3, 7, 21, 37, 47, 73, 83, 111, 141, 219, 249, 259, 329, 511, 581, 777, 987, 1533, 1739, 1743, 2701, 3071, 3431, 3901, 5217, 6059, 8103, 9213, 10293, 11703, 12173, 18177, 18907, 21497, 24017, 27307, 36519, 42413, 56721, 64491, 72051, 81921, 126947, 127239, 144337, 224183, 284773, 380841, 433011, 672549, 854319, 888629, 1010359, 1569281, 1993411, 2665887, 3031077, 4707843, 5980233, 10536601, 31609803, 73756207, 221268621]

約数ペア:

[(1, 221268621), (3, 73756207), (7, 31609803), (21, 10536601), (37, 5980233), (47, 4707843), (73, 3031077), (83, 2665887), (111, 1993411), (141, 1569281), (219, 1010359), (249, 888629), (259, 854319), (329, 672549), (511, 433011), (581, 380841), (777, 284773), (987, 224183), (1533, 144337), (1739, 127239), (1743, 126947), (2701, 81921), (3071, 72051), (3431, 64491), (3901, 56721), (5217, 42413), (6059, 36519), (8103, 27307), (9213, 24017), (10293, 21497), (11703, 18907), (12173, 18177)]