390017840

素因数分解:

$2^4\times 5^1\times {\mathrm{4875223}}^1$

素因数の和:4875236

約数の個数: 20

約数和(自身を含む): 906791664

約数和(自身を除く): 516773824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4875223, 9750446, 19500892, 24376115, 39001784, 48752230, 78003568, 97504460, 195008920, 390017840]

約数ペア:

[(1, 390017840), (2, 195008920), (4, 97504460), (5, 78003568), (8, 48752230), (10, 39001784), (16, 24376115), (20, 19500892), (40, 9750446), (80, 4875223)]