428858495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{643}}^1$

素因数の和:1023

約数の個数: 32

約数和(自身を含む): 574715904

約数和(自身を除く): 145857409

約数列:

[1, 5, 13, 31, 65, 155, 331, 403, 643, 1655, 2015, 3215, 4303, 8359, 10261, 19933, 21515, 41795, 51305, 99665, 133393, 212833, 259129, 666965, 1064165, 1295645, 2766829, 6597823, 13834145, 32989115, 85771699, 428858495]

約数ペア:

[(1, 428858495), (5, 85771699), (13, 32989115), (31, 13834145), (65, 6597823), (155, 2766829), (331, 1295645), (403, 1064165), (643, 666965), (1655, 259129), (2015, 212833), (3215, 133393), (4303, 99665), (8359, 51305), (10261, 41795), (19933, 21515)]