638718032

素因数分解:

$2^4\times {\mathrm{487}}^1\times {\mathrm{81971}}^1$

素因数の和:82466

約数の個数: 20

約数和(自身を含む): 1240072416

約数和(自身を除く): 601354384

約数列:

[1, 2, 4, 8, 16, 487, 974, 1948, 3896, 7792, 81971, 163942, 327884, 655768, 1311536, 39919877, 79839754, 159679508, 319359016, 638718032]

約数ペア:

[(1, 638718032), (2, 319359016), (4, 159679508), (8, 79839754), (16, 39919877), (487, 1311536), (974, 655768), (1948, 327884), (3896, 163942), (7792, 81971)]