21943701

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 36

約数和(自身を含む): 35338212

約数和(自身を除く): 13394511

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 137, 333, 411, 481, 1233, 1369, 1443, 1781, 4107, 4329, 5069, 5343, 12321, 15207, 16029, 17797, 45621, 53391, 65897, 160173, 187553, 197691, 562659, 593073, 1687977, 2438189, 7314567, 21943701]

約数ペア:

[(1, 21943701), (3, 7314567), (9, 2438189), (13, 1687977), (37, 593073), (39, 562659), (111, 197691), (117, 187553), (137, 160173), (333, 65897), (411, 53391), (481, 45621), (1233, 17797), (1369, 16029), (1443, 15207), (1781, 12321), (4107, 5343), (4329, 5069)]