19618840

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1567}}^1$

素因数の和:1891

約数の個数: 32

約数和(自身を含む): 44311680

約数和(自身を除く): 24692840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 1567, 2504, 3130, 3134, 6260, 6268, 7835, 12520, 12536, 15670, 31340, 62680, 490471, 980942, 1961884, 2452355, 3923768, 4904710, 9809420, 19618840]

約数ペア:

[(1, 19618840), (2, 9809420), (4, 4904710), (5, 3923768), (8, 2452355), (10, 1961884), (20, 980942), (40, 490471), (313, 62680), (626, 31340), (1252, 15670), (1565, 12536), (1567, 12520), (2504, 7835), (3130, 6268), (3134, 6260)]