21961605

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 14533755

約数列:

[1, 3, 5, 15, 43, 79, 129, 215, 237, 395, 431, 645, 1185, 1293, 2155, 3397, 6465, 10191, 16985, 18533, 34049, 50955, 55599, 92665, 102147, 170245, 277995, 510735, 1464107, 4392321, 7320535, 21961605]

約数ペア:

[(1, 21961605), (3, 7320535), (5, 4392321), (15, 1464107), (43, 510735), (79, 277995), (129, 170245), (215, 102147), (237, 92665), (395, 55599), (431, 50955), (645, 34049), (1185, 18533), (1293, 16985), (2155, 10191), (3397, 6465)]