20490379

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1693}}^1$

素因数の和:1739

約数の個数: 24

約数和(自身を含む): 27036240

約数和(自身を除く): 6545861

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 637, 931, 1693, 1729, 11851, 12103, 22009, 32167, 82957, 154063, 225169, 418171, 1078441, 1576183, 2927197, 20490379]

約数ペア:

[(1, 20490379), (7, 2927197), (13, 1576183), (19, 1078441), (49, 418171), (91, 225169), (133, 154063), (247, 82957), (637, 32167), (931, 22009), (1693, 12103), (1729, 11851)]