20677657

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{227}}^1$

素因数の和:278

約数の個数: 36

約数和(自身を含む): 28539216

約数和(自身を除く): 7861559

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 169, 227, 539, 637, 1001, 1183, 1589, 1859, 2497, 2951, 7007, 8281, 11123, 13013, 17479, 20657, 32461, 38363, 91091, 122353, 144599, 227227, 268541, 421993, 1590589, 1879787, 2953951, 20677657]

約数ペア:

[(1, 20677657), (7, 2953951), (11, 1879787), (13, 1590589), (49, 421993), (77, 268541), (91, 227227), (143, 144599), (169, 122353), (227, 91091), (539, 38363), (637, 32461), (1001, 20657), (1183, 17479), (1589, 13013), (1859, 11123), (2497, 8281), (2951, 7007)]