389969305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{691}}^1$

素因数の和:1069

約数の個数: 32

約数和(自身を含む): 529330176

約数和(自身を除く): 139360871

約数列:

[1, 5, 11, 31, 55, 155, 331, 341, 691, 1655, 1705, 3455, 3641, 7601, 10261, 18205, 21421, 38005, 51305, 107105, 112871, 228721, 235631, 564355, 1143605, 1178155, 2515931, 7090351, 12579655, 35451755, 77993861, 389969305]

約数ペア:

[(1, 389969305), (5, 77993861), (11, 35451755), (31, 12579655), (55, 7090351), (155, 2515931), (331, 1178155), (341, 1143605), (691, 564355), (1655, 235631), (1705, 228721), (3455, 112871), (3641, 107105), (7601, 51305), (10261, 38005), (18205, 21421)]