21739532

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{319699}}^1$

素因数の和:319720

約数の個数: 12

約数和(自身を含む): 40282200

約数和(自身を除く): 18542668

約数列:

[1, 2, 4, 17, 34, 68, 319699, 639398, 1278796, 5434883, 10869766, 21739532]

約数ペア:

[(1, 21739532), (2, 10869766), (4, 5434883), (17, 1278796), (34, 639398), (68, 319699)]