245909740

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{30971}}^1$

素因数の和:31377

約数の個数: 24

約数和(自身を含む): 517727952

約数和(自身を除く): 271818212

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 30971, 61942, 123884, 154855, 309710, 619420, 12295487, 24590974, 49181948, 61477435, 122954870, 245909740]

約数ペア:

[(1, 245909740), (2, 122954870), (4, 61477435), (5, 49181948), (10, 24590974), (20, 12295487), (397, 619420), (794, 309710), (1588, 154855), (1985, 123884), (3970, 61942), (7940, 30971)]