20967920

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{751}}^1$

素因数の和:1113

約数の個数: 40

約数和(自身を含む): 48955200

約数和(自身を除く): 27987280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 698, 751, 1396, 1502, 1745, 2792, 3004, 3490, 3755, 5584, 6008, 6980, 7510, 12016, 13960, 15020, 27920, 30040, 60080, 262099, 524198, 1048396, 1310495, 2096792, 2620990, 4193584, 5241980, 10483960, 20967920]

約数ペア:

[(1, 20967920), (2, 10483960), (4, 5241980), (5, 4193584), (8, 2620990), (10, 2096792), (16, 1310495), (20, 1048396), (40, 524198), (80, 262099), (349, 60080), (698, 30040), (751, 27920), (1396, 15020), (1502, 13960), (1745, 12016), (2792, 7510), (3004, 6980), (3490, 6008), (3755, 5584)]