18781910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1709}}^1$

素因数の和:1880

約数の個数: 32

約数和(自身を含む): 38905920

約数和(自身を除く): 20124010

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 157, 314, 785, 1099, 1570, 1709, 2198, 3418, 5495, 8545, 10990, 11963, 17090, 23926, 59815, 119630, 268313, 536626, 1341565, 1878191, 2683130, 3756382, 9390955, 18781910]

約数ペア:

[(1, 18781910), (2, 9390955), (5, 3756382), (7, 2683130), (10, 1878191), (14, 1341565), (35, 536626), (70, 268313), (157, 119630), (314, 59815), (785, 23926), (1099, 17090), (1570, 11963), (1709, 10990), (2198, 8545), (3418, 5495)]