396804920

素因数分解:

$2^3\times 5^1\times {\mathrm{9920123}}^1$

素因数の和:9920134

約数の個数: 16

約数和(自身を含む): 892811160

約数和(自身を除く): 496006240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9920123, 19840246, 39680492, 49600615, 79360984, 99201230, 198402460, 396804920]

約数ペア:

[(1, 396804920), (2, 198402460), (4, 99201230), (5, 79360984), (8, 49600615), (10, 39680492), (20, 19840246), (40, 9920123)]