21859557

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 10396443

約数列:

[1, 3, 19, 31, 57, 89, 93, 139, 267, 417, 589, 1691, 1767, 2641, 2759, 4309, 5073, 7923, 8277, 12371, 12927, 37113, 52421, 81871, 157263, 235049, 245613, 383501, 705147, 1150503, 7286519, 21859557]

約数ペア:

[(1, 21859557), (3, 7286519), (19, 1150503), (31, 705147), (57, 383501), (89, 245613), (93, 235049), (139, 157263), (267, 81871), (417, 52421), (589, 37113), (1691, 12927), (1767, 12371), (2641, 8277), (2759, 7923), (4309, 5073)]