31938140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{122839}}^1$

素因数の和:122861

約数の個数: 24

約数和(自身を含む): 72229920

約数和(自身を除く): 40291780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 122839, 245678, 491356, 614195, 1228390, 1596907, 2456780, 3193814, 6387628, 7984535, 15969070, 31938140]

約数ペア:

[(1, 31938140), (2, 15969070), (4, 7984535), (5, 6387628), (10, 3193814), (13, 2456780), (20, 1596907), (26, 1228390), (52, 614195), (65, 491356), (130, 245678), (260, 122839)]