21485008

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78989}}^1$

素因数の和:79014

約数の個数: 20

約数和(自身を含む): 44076420

約数和(自身を除く): 22591412

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78989, 157978, 315956, 631912, 1263824, 1342813, 2685626, 5371252, 10742504, 21485008]

約数ペア:

[(1, 21485008), (2, 10742504), (4, 5371252), (8, 2685626), (16, 1342813), (17, 1263824), (34, 631912), (68, 315956), (136, 157978), (272, 78989)]