219963807

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{74287}}^1$

素因数の和:74347

約数の個数: 24

約数和(自身を含む): 370845696

約数和(自身を除く): 150881889

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 74287, 222861, 520009, 668583, 1560027, 3491489, 4680081, 10474467, 24440423, 31423401, 73321269, 219963807]

約数ペア:

[(1, 219963807), (3, 73321269), (7, 31423401), (9, 24440423), (21, 10474467), (47, 4680081), (63, 3491489), (141, 1560027), (329, 668583), (423, 520009), (987, 222861), (2961, 74287)]