289409840

素因数分解:

$2^4\times 5^1\times {\mathrm{3617623}}^1$

素因数の和:3617636

約数の個数: 20

約数和(自身を含む): 672878064

約数和(自身を除く): 383468224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3617623, 7235246, 14470492, 18088115, 28940984, 36176230, 57881968, 72352460, 144704920, 289409840]

約数ペア:

[(1, 289409840), (2, 144704920), (4, 72352460), (5, 57881968), (8, 36176230), (10, 28940984), (16, 18088115), (20, 14470492), (40, 7235246), (80, 3617623)]