19888815

素因数分解:

$3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{9539}}^1$

素因数の和:9686

約数の個数: 16

約数和(自身を含む): 32054400

約数和(自身を除く): 12165585

約数列:

[1, 3, 5, 15, 139, 417, 695, 2085, 9539, 28617, 47695, 143085, 1325921, 3977763, 6629605, 19888815]

約数ペア:

[(1, 19888815), (3, 6629605), (5, 3977763), (15, 1325921), (139, 143085), (417, 47695), (695, 28617), (2085, 9539)]