28919020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111227}}^1$

素因数の和:111249

約数の個数: 24

約数和(自身を含む): 65402064

約数和(自身を除く): 36483044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 111227, 222454, 444908, 556135, 1112270, 1445951, 2224540, 2891902, 5783804, 7229755, 14459510, 28919020]

約数ペア:

[(1, 28919020), (2, 14459510), (4, 7229755), (5, 5783804), (10, 2891902), (13, 2224540), (20, 1445951), (26, 1112270), (52, 556135), (65, 444908), (130, 222454), (260, 111227)]