21578908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21841}}^1$

素因数の和:21877

約数の個数: 24

約数和(自身を含む): 42810320

約数和(自身を除く): 21231412

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 21841, 43682, 87364, 283933, 414979, 567866, 829958, 1135732, 1659916, 5394727, 10789454, 21578908]

約数ペア:

[(1, 21578908), (2, 10789454), (4, 5394727), (13, 1659916), (19, 1135732), (26, 829958), (38, 567866), (52, 414979), (76, 283933), (247, 87364), (494, 43682), (988, 21841)]