18923780

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4243}}^1$

素因数の和:4475

約数の個数: 24

約数和(自身を含む): 39927552

約数和(自身を除く): 21003772

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4243, 4460, 8486, 16972, 21215, 42430, 84860, 946189, 1892378, 3784756, 4730945, 9461890, 18923780]

約数ペア:

[(1, 18923780), (2, 9461890), (4, 4730945), (5, 3784756), (10, 1892378), (20, 946189), (223, 84860), (446, 42430), (892, 21215), (1115, 16972), (2230, 8486), (4243, 4460)]