21176545

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1319}}^1$

素因数の和:1369

約数の個数: 24

約数和(自身を含む): 28987200

約数和(自身を除く): 7810655

約数列:

[1, 5, 13, 19, 65, 95, 169, 247, 845, 1235, 1319, 3211, 6595, 16055, 17147, 25061, 85735, 125305, 222911, 325793, 1114555, 1628965, 4235309, 21176545]

約数ペア:

[(1, 21176545), (5, 4235309), (13, 1628965), (19, 1114555), (65, 325793), (95, 222911), (169, 125305), (247, 85735), (845, 25061), (1235, 17147), (1319, 16055), (3211, 6595)]