18873113

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:664

約数の個数: 16

約数和(自身を含む): 22464000

約数和(自身を除く): 3590887

約数列:

[1, 7, 29, 203, 239, 389, 1673, 2723, 6931, 11281, 48517, 78967, 92971, 650797, 2696159, 18873113]

約数ペア:

[(1, 18873113), (7, 2696159), (29, 650797), (203, 92971), (239, 78967), (389, 48517), (1673, 11281), (2723, 6931)]