256445140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1831751}}^1$

素因数の和:1831767

約数の個数: 24

約数和(自身を含む): 615468672

約数和(自身を除く): 359023532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1831751, 3663502, 7327004, 9158755, 12822257, 18317510, 25644514, 36635020, 51289028, 64111285, 128222570, 256445140]

約数ペア:

[(1, 256445140), (2, 128222570), (4, 64111285), (5, 51289028), (7, 36635020), (10, 25644514), (14, 18317510), (20, 12822257), (28, 9158755), (35, 7327004), (70, 3663502), (140, 1831751)]