18380733

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6581}}^1$

素因数の和:6617

約数の個数: 24

約数和(自身を含む): 30013920

約数和(自身を除く): 11633187

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 6581, 19743, 46067, 125039, 138201, 322469, 375117, 875273, 967407, 2625819, 6126911, 18380733]

約数ペア:

[(1, 18380733), (3, 6126911), (7, 2625819), (19, 967407), (21, 875273), (49, 375117), (57, 322469), (133, 138201), (147, 125039), (399, 46067), (931, 19743), (2793, 6581)]