18040418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{353}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 31197312

約数和(自身を除く): 13156894

約数列:

[1, 2, 11, 22, 23, 46, 101, 202, 253, 353, 506, 706, 1111, 2222, 2323, 3883, 4646, 7766, 8119, 16238, 25553, 35653, 51106, 71306, 89309, 178618, 392183, 784366, 820019, 1640038, 9020209, 18040418]

約数ペア:

[(1, 18040418), (2, 9020209), (11, 1640038), (22, 820019), (23, 784366), (46, 392183), (101, 178618), (202, 89309), (253, 71306), (353, 51106), (506, 35653), (706, 25553), (1111, 16238), (2222, 8119), (2323, 7766), (3883, 4646)]