19673871

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:731

約数の個数: 32

約数和(自身を含む): 31653888

約数和(自身を除く): 11980017

約数列:

[1, 3, 7, 21, 31, 47, 93, 141, 217, 329, 643, 651, 987, 1457, 1929, 4371, 4501, 10199, 13503, 19933, 30221, 30597, 59799, 90663, 139531, 211547, 418593, 634641, 936851, 2810553, 6557957, 19673871]

約数ペア:

[(1, 19673871), (3, 6557957), (7, 2810553), (21, 936851), (31, 634641), (47, 418593), (93, 211547), (141, 139531), (217, 90663), (329, 59799), (643, 30597), (651, 30221), (987, 19933), (1457, 13503), (1929, 10199), (4371, 4501)]