21947618

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2689}}^1$

素因数の和:2762

約数の個数: 32

約数和(自身を含む): 41834880

約数和(自身を除く): 19887262

約数列:

[1, 2, 7, 11, 14, 22, 53, 77, 106, 154, 371, 583, 742, 1166, 2689, 4081, 5378, 8162, 18823, 29579, 37646, 59158, 142517, 207053, 285034, 414106, 997619, 1567687, 1995238, 3135374, 10973809, 21947618]

約数ペア:

[(1, 21947618), (2, 10973809), (7, 3135374), (11, 1995238), (14, 1567687), (22, 997619), (53, 414106), (77, 285034), (106, 207053), (154, 142517), (371, 59158), (583, 37646), (742, 29579), (1166, 18823), (2689, 8162), (4081, 5378)]