28242655

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 40339584

約数和(自身を除く): 12096929

約数列:

[1, 5, 7, 35, 37, 113, 185, 193, 259, 565, 791, 965, 1295, 1351, 3955, 4181, 6755, 7141, 20905, 21809, 29267, 35705, 49987, 109045, 146335, 152663, 249935, 763315, 806933, 4034665, 5648531, 28242655]

約数ペア:

[(1, 28242655), (5, 5648531), (7, 4034665), (35, 806933), (37, 763315), (113, 249935), (185, 152663), (193, 146335), (259, 109045), (565, 49987), (791, 35705), (965, 29267), (1295, 21809), (1351, 20905), (3955, 7141), (4181, 6755)]