20153749

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 5701451

約数列:

[1, 7, 11, 49, 77, 139, 269, 539, 973, 1529, 1883, 2959, 6811, 10703, 13181, 20713, 37391, 74921, 144991, 261737, 411301, 1832159, 2879107, 20153749]

約数ペア:

[(1, 20153749), (7, 2879107), (11, 1832159), (49, 411301), (77, 261737), (139, 144991), (269, 74921), (539, 37391), (973, 20713), (1529, 13181), (1883, 10703), (2959, 6811)]