18896540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72679}}^1$

素因数の和:72701

約数の個数: 24

約数和(自身を含む): 42735840

約数和(自身を除く): 23839300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72679, 145358, 290716, 363395, 726790, 944827, 1453580, 1889654, 3779308, 4724135, 9448270, 18896540]

約数ペア:

[(1, 18896540), (2, 9448270), (4, 4724135), (5, 3779308), (10, 1889654), (13, 1453580), (20, 944827), (26, 726790), (52, 363395), (65, 290716), (130, 145358), (260, 72679)]