21377564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 42542976

約数和(自身を除く): 21165412

約数列:

[1, 2, 4, 13, 26, 37, 41, 52, 74, 82, 148, 164, 271, 481, 533, 542, 962, 1066, 1084, 1517, 1924, 2132, 3034, 3523, 6068, 7046, 10027, 11111, 14092, 19721, 20054, 22222, 39442, 40108, 44444, 78884, 130351, 144443, 260702, 288886, 411107, 521404, 577772, 822214, 1644428, 5344391, 10688782, 21377564]

約数ペア:

[(1, 21377564), (2, 10688782), (4, 5344391), (13, 1644428), (26, 822214), (37, 577772), (41, 521404), (52, 411107), (74, 288886), (82, 260702), (148, 144443), (164, 130351), (271, 78884), (481, 44444), (533, 40108), (542, 39442), (962, 22222), (1066, 20054), (1084, 19721), (1517, 14092), (1924, 11111), (2132, 10027), (3034, 7046), (3523, 6068)]