21119967

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 16204833

約数列:

[1, 3, 9, 11, 17, 27, 33, 47, 51, 89, 99, 141, 153, 187, 267, 297, 423, 459, 517, 561, 799, 801, 979, 1269, 1513, 1551, 1683, 2397, 2403, 2937, 4183, 4539, 4653, 5049, 7191, 8789, 8811, 12549, 13617, 13959, 16643, 21573, 26367, 26433, 37647, 40851, 46013, 49929, 71111, 79101, 112941, 138039, 149787, 213333, 237303, 414117, 449361, 639999, 782221, 1242351, 1919997, 2346663, 7039989, 21119967]

約数ペア:

[(1, 21119967), (3, 7039989), (9, 2346663), (11, 1919997), (17, 1242351), (27, 782221), (33, 639999), (47, 449361), (51, 414117), (89, 237303), (99, 213333), (141, 149787), (153, 138039), (187, 112941), (267, 79101), (297, 71111), (423, 49929), (459, 46013), (517, 40851), (561, 37647), (799, 26433), (801, 26367), (979, 21573), (1269, 16643), (1513, 13959), (1551, 13617), (1683, 12549), (2397, 8811), (2403, 8789), (2937, 7191), (4183, 5049), (4539, 4653)]