216555745

素因数分解:

$5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{6359}}^1$

素因数の和:6517

約数の個数: 24

約数和(自身を含む): 304516800

約数和(自身を除く): 87961055

約数列:

[1, 5, 7, 35, 49, 139, 245, 695, 973, 4865, 6359, 6811, 31795, 34055, 44513, 222565, 311591, 883901, 1557955, 4419505, 6187307, 30936535, 43311149, 216555745]

約数ペア:

[(1, 216555745), (5, 43311149), (7, 30936535), (35, 6187307), (49, 4419505), (139, 1557955), (245, 883901), (695, 311591), (973, 222565), (4865, 44513), (6359, 34055), (6811, 31795)]