20163555

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15451}}^1$

素因数の和:15491

約数の個数: 24

約数和(自身を含む): 36157680

約数和(自身を除く): 15994125

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 15451, 46353, 77255, 139059, 231765, 448079, 695295, 1344237, 2240395, 4032711, 6721185, 20163555]

約数ペア:

[(1, 20163555), (3, 6721185), (5, 4032711), (9, 2240395), (15, 1344237), (29, 695295), (45, 448079), (87, 231765), (145, 139059), (261, 77255), (435, 46353), (1305, 15451)]