21917584

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105373}}^1$

素因数の和:105394

約数の個数: 20

約数和(自身を含む): 45732316

約数和(自身を除く): 23814732

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105373, 210746, 421492, 842984, 1369849, 1685968, 2739698, 5479396, 10958792, 21917584]

約数ペア:

[(1, 21917584), (2, 10958792), (4, 5479396), (8, 2739698), (13, 1685968), (16, 1369849), (26, 842984), (52, 421492), (104, 210746), (208, 105373)]