278931135

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1949}}^1$

素因数の和:2040

約数の個数: 64

約数和(自身を含む): 539136000

約数和(自身を除く): 260204865

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 47, 87, 105, 141, 145, 203, 235, 329, 435, 609, 705, 987, 1015, 1363, 1645, 1949, 3045, 4089, 4935, 5847, 6815, 9541, 9745, 13643, 20445, 28623, 29235, 40929, 47705, 56521, 68215, 91603, 143115, 169563, 204645, 274809, 282605, 395647, 458015, 641221, 847815, 1186941, 1374045, 1923663, 1978235, 2656487, 3206105, 5934705, 7969461, 9618315, 13282435, 18595409, 39847305, 55786227, 92977045, 278931135]

約数ペア:

[(1, 278931135), (3, 92977045), (5, 55786227), (7, 39847305), (15, 18595409), (21, 13282435), (29, 9618315), (35, 7969461), (47, 5934705), (87, 3206105), (105, 2656487), (141, 1978235), (145, 1923663), (203, 1374045), (235, 1186941), (329, 847815), (435, 641221), (609, 458015), (705, 395647), (987, 282605), (1015, 274809), (1363, 204645), (1645, 169563), (1949, 143115), (3045, 91603), (4089, 68215), (4935, 56521), (5847, 47705), (6815, 40929), (9541, 29235), (9745, 28623), (13643, 20445)]