215680077

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{140143}}^1$

素因数の和:140174

約数の個数: 20

約数和(自身を含む): 339148480

約数和(自身を除く): 123468403

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 140143, 420429, 1261287, 2662717, 3783861, 7988151, 11351583, 23964453, 71893359, 215680077]

約数ペア:

[(1, 215680077), (3, 71893359), (9, 23964453), (19, 11351583), (27, 7988151), (57, 3783861), (81, 2662717), (171, 1261287), (513, 420429), (1539, 140143)]