40657840

素因数分解:

$2^4\times 5^1\times {\mathrm{508223}}^1$

素因数の和:508236

約数の個数: 20

約数和(自身を含む): 94529664

約数和(自身を除く): 53871824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 508223, 1016446, 2032892, 2541115, 4065784, 5082230, 8131568, 10164460, 20328920, 40657840]

約数ペア:

[(1, 40657840), (2, 20328920), (4, 10164460), (5, 8131568), (8, 5082230), (10, 4065784), (16, 2541115), (20, 2032892), (40, 1016446), (80, 508223)]