18698715

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:489

約数の個数: 64

約数和(自身を含む): 38891520

約数和(自身を除く): 20192805

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 47, 63, 105, 135, 141, 189, 235, 315, 329, 421, 423, 705, 945, 987, 1263, 1269, 1645, 2105, 2115, 2947, 2961, 3789, 4935, 6315, 6345, 8841, 8883, 11367, 14735, 14805, 18945, 19787, 26523, 44205, 44415, 56835, 59361, 79569, 98935, 132615, 138509, 178083, 296805, 397845, 415527, 534249, 692545, 890415, 1246581, 2077635, 2671245, 3739743, 6232905, 18698715]

約数ペア:

[(1, 18698715), (3, 6232905), (5, 3739743), (7, 2671245), (9, 2077635), (15, 1246581), (21, 890415), (27, 692545), (35, 534249), (45, 415527), (47, 397845), (63, 296805), (105, 178083), (135, 138509), (141, 132615), (189, 98935), (235, 79569), (315, 59361), (329, 56835), (421, 44415), (423, 44205), (705, 26523), (945, 19787), (987, 18945), (1263, 14805), (1269, 14735), (1645, 11367), (2105, 8883), (2115, 8841), (2947, 6345), (2961, 6315), (3789, 4935)]