21017591

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4271}}^1$

素因数の和:4334

約数の個数: 16

約数和(自身を含む): 25973760

約数和(自身を除く): 4956169

約数列:

[1, 7, 19, 37, 133, 259, 703, 4271, 4921, 29897, 81149, 158027, 568043, 1106189, 3002513, 21017591]

約数ペア:

[(1, 21017591), (7, 3002513), (19, 1106189), (37, 568043), (133, 158027), (259, 81149), (703, 29897), (4271, 4921)]