21893008

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80489}}^1$

素因数の和:80514

約数の個数: 20

約数和(自身を含む): 44913420

約数和(自身を除く): 23020412

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80489, 160978, 321956, 643912, 1287824, 1368313, 2736626, 5473252, 10946504, 21893008]

約数ペア:

[(1, 21893008), (2, 10946504), (4, 5473252), (8, 2736626), (16, 1368313), (17, 1287824), (34, 643912), (68, 321956), (136, 160978), (272, 80489)]