18900010

素因数分解:

$2^1\times 5^1\times {\mathrm{1217}}^1\times {\mathrm{1553}}^1$

素因数の和:2777

約数の個数: 16

約数和(自身を含む): 34069896

約数和(自身を除く): 15169886

約数列:

[1, 2, 5, 10, 1217, 1553, 2434, 3106, 6085, 7765, 12170, 15530, 1890001, 3780002, 9450005, 18900010]

約数ペア:

[(1, 18900010), (2, 9450005), (5, 3780002), (10, 1890001), (1217, 15530), (1553, 12170), (2434, 7765), (3106, 6085)]