21939376

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{72169}}^1$

素因数の和:72196

約数の個数: 20

約数和(自身を含む): 44745400

約数和(自身を除く): 22806024

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 72169, 144338, 288676, 577352, 1154704, 1371211, 2742422, 5484844, 10969688, 21939376]

約数ペア:

[(1, 21939376), (2, 10969688), (4, 5484844), (8, 2742422), (16, 1371211), (19, 1154704), (38, 577352), (76, 288676), (152, 144338), (304, 72169)]