18537584

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89123}}^1$

素因数の和:89144

約数の個数: 20

約数和(自身を含む): 38679816

約数和(自身を除く): 20142232

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 89123, 178246, 356492, 712984, 1158599, 1425968, 2317198, 4634396, 9268792, 18537584]

約数ペア:

[(1, 18537584), (2, 9268792), (4, 4634396), (8, 2317198), (13, 1425968), (16, 1158599), (26, 712984), (52, 356492), (104, 178246), (208, 89123)]