21510993

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 34209792

約数和(自身を除く): 12698799

約数列:

[1, 3, 7, 21, 31, 93, 173, 191, 217, 519, 573, 651, 1211, 1337, 3633, 4011, 5363, 5921, 16089, 17763, 33043, 37541, 41447, 99129, 112623, 124341, 231301, 693903, 1024333, 3072999, 7170331, 21510993]

約数ペア:

[(1, 21510993), (3, 7170331), (7, 3072999), (21, 1024333), (31, 693903), (93, 231301), (173, 124341), (191, 112623), (217, 99129), (519, 41447), (573, 37541), (651, 33043), (1211, 17763), (1337, 16089), (3633, 5921), (4011, 5363)]