21679525

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^2\times {\mathrm{67}}^1$

素因数の和:170

約数の個数: 36

約数和(自身を含む): 31923552

約数和(自身を除く): 10244027

約数列:

[1, 5, 7, 25, 35, 43, 67, 175, 215, 301, 335, 469, 1075, 1505, 1675, 1849, 2345, 2881, 7525, 9245, 11725, 12943, 14405, 20167, 46225, 64715, 72025, 100835, 123883, 323575, 504175, 619415, 867181, 3097075, 4335905, 21679525]

約数ペア:

[(1, 21679525), (5, 4335905), (7, 3097075), (25, 867181), (35, 619415), (43, 504175), (67, 323575), (175, 123883), (215, 100835), (301, 72025), (335, 64715), (469, 46225), (1075, 20167), (1505, 14405), (1675, 12943), (1849, 11725), (2345, 9245), (2881, 7525)]