21818797

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 7985747

約数列:

[1, 7, 11, 13, 71, 77, 91, 143, 307, 497, 781, 923, 1001, 2149, 3377, 3991, 5467, 6461, 10153, 21797, 23639, 27937, 43901, 71071, 152579, 239767, 283361, 307307, 1678369, 1983527, 3116971, 21818797]

約数ペア:

[(1, 21818797), (7, 3116971), (11, 1983527), (13, 1678369), (71, 307307), (77, 283361), (91, 239767), (143, 152579), (307, 71071), (497, 43901), (781, 27937), (923, 23639), (1001, 21797), (2149, 10153), (3377, 6461), (3991, 5467)]