19306820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{74257}}^1$

素因数の和:74279

約数の個数: 24

約数和(自身を含む): 43663704

約数和(自身を除く): 24356884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 74257, 148514, 297028, 371285, 742570, 965341, 1485140, 1930682, 3861364, 4826705, 9653410, 19306820]

約数ペア:

[(1, 19306820), (2, 9653410), (4, 4826705), (5, 3861364), (10, 1930682), (13, 1485140), (20, 965341), (26, 742570), (52, 371285), (65, 297028), (130, 148514), (260, 74257)]