19997164

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{2539}}^1$

素因数の和:2733

約数の個数: 24

約数和(自身を含む): 38404800

約数和(自身を除く): 18407636

約数列:

[1, 2, 4, 11, 22, 44, 179, 358, 716, 1969, 2539, 3938, 5078, 7876, 10156, 27929, 55858, 111716, 454481, 908962, 1817924, 4999291, 9998582, 19997164]

約数ペア:

[(1, 19997164), (2, 9998582), (4, 4999291), (11, 1817924), (22, 908962), (44, 454481), (179, 111716), (358, 55858), (716, 27929), (1969, 10156), (2539, 7876), (3938, 5078)]