21630544

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103993}}^1$

素因数の和:104014

約数の個数: 20

約数和(自身を含む): 45133396

約数和(自身を除く): 23502852

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103993, 207986, 415972, 831944, 1351909, 1663888, 2703818, 5407636, 10815272, 21630544]

約数ペア:

[(1, 21630544), (2, 10815272), (4, 5407636), (8, 2703818), (13, 1663888), (16, 1351909), (26, 831944), (52, 415972), (104, 207986), (208, 103993)]