19885448

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2539}}^1$

素因数の和:2645

約数の個数: 32

約数和(自身を含む): 41148000

約数和(自身を除く): 21262552

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 178, 356, 712, 979, 1958, 2539, 3916, 5078, 7832, 10156, 20312, 27929, 55858, 111716, 223432, 225971, 451942, 903884, 1807768, 2485681, 4971362, 9942724, 19885448]

約数ペア:

[(1, 19885448), (2, 9942724), (4, 4971362), (8, 2485681), (11, 1807768), (22, 903884), (44, 451942), (88, 225971), (89, 223432), (178, 111716), (356, 55858), (712, 27929), (979, 20312), (1958, 10156), (2539, 7832), (3916, 5078)]