20449390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157303}}^1$

素因数の和:157323

約数の個数: 16

約数和(自身を含む): 39640608

約数和(自身を除く): 19191218

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157303, 314606, 786515, 1573030, 2044939, 4089878, 10224695, 20449390]

約数ペア:

[(1, 20449390), (2, 10224695), (5, 4089878), (10, 2044939), (13, 1573030), (26, 786515), (65, 314606), (130, 157303)]