209984005

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{179}}^1\times {\mathrm{277}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 319455360

約数和(自身を除く): 109471355

約数列:

[1, 5, 7, 11, 35, 55, 77, 121, 179, 277, 385, 605, 847, 895, 1253, 1385, 1939, 1969, 3047, 4235, 6265, 9695, 9845, 13783, 15235, 21329, 21659, 33517, 49583, 68915, 106645, 108295, 151613, 167585, 234619, 247915, 347081, 545413, 758065, 1173095, 1735405, 2727065, 3817891, 5999543, 19089455, 29997715, 41996801, 209984005]

約数ペア:

[(1, 209984005), (5, 41996801), (7, 29997715), (11, 19089455), (35, 5999543), (55, 3817891), (77, 2727065), (121, 1735405), (179, 1173095), (277, 758065), (385, 545413), (605, 347081), (847, 247915), (895, 234619), (1253, 167585), (1385, 151613), (1939, 108295), (1969, 106645), (3047, 68915), (4235, 49583), (6265, 33517), (9695, 21659), (9845, 21329), (13783, 15235)]