221874687

素因数分解:

$3^3\times {\mathrm{83}}^1\times {\mathrm{181}}^1\times {\mathrm{547}}^1$

素因数の和:820

約数の個数: 32

約数和(自身を含む): 335112960

約数和(自身を除く): 113238273

約数列:

[1, 3, 9, 27, 83, 181, 249, 543, 547, 747, 1629, 1641, 2241, 4887, 4923, 14769, 15023, 45069, 45401, 99007, 135207, 136203, 297021, 405621, 408609, 891063, 1225827, 2673189, 8217581, 24652743, 73958229, 221874687]

約数ペア:

[(1, 221874687), (3, 73958229), (9, 24652743), (27, 8217581), (83, 2673189), (181, 1225827), (249, 891063), (543, 408609), (547, 405621), (747, 297021), (1629, 136203), (1641, 135207), (2241, 99007), (4887, 45401), (4923, 45069), (14769, 15023)]