221257869

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{554531}}^1$

素因数の和:554560

約数の個数: 16

約数和(自身を含む): 354900480

約数和(自身を除く): 133642611

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 554531, 1663593, 3881717, 10536089, 11645151, 31608267, 73752623, 221257869]

約数ペア:

[(1, 221257869), (3, 73752623), (7, 31608267), (19, 11645151), (21, 10536089), (57, 3881717), (133, 1663593), (399, 554531)]