890287910

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{90019}}^1$

素因数の和:90092

約数の個数: 32

約数和(自身を含む): 1711100160

約数和(自身を除く): 820812250

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 4945, 9890, 90019, 180038, 450095, 900190, 2070437, 3870817, 4140874, 7741634, 10352185, 19354085, 20704370, 38708170, 89028791, 178057582, 445143955, 890287910]

約数ペア:

[(1, 890287910), (2, 445143955), (5, 178057582), (10, 89028791), (23, 38708170), (43, 20704370), (46, 19354085), (86, 10352185), (115, 7741634), (215, 4140874), (230, 3870817), (430, 2070437), (989, 900190), (1978, 450095), (4945, 180038), (9890, 90019)]