28838420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110917}}^1$

素因数の和:110939

約数の個数: 24

約数和(自身を含む): 65219784

約数和(自身を除く): 36381364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110917, 221834, 443668, 554585, 1109170, 1441921, 2218340, 2883842, 5767684, 7209605, 14419210, 28838420]

約数ペア:

[(1, 28838420), (2, 14419210), (4, 7209605), (5, 5767684), (10, 2883842), (13, 2218340), (20, 1441921), (26, 1109170), (52, 554585), (65, 443668), (130, 221834), (260, 110917)]