81318280

素因数分解:

$2^3\times 5^1\times {\mathrm{751}}^1\times {\mathrm{2707}}^1$

素因数の和:3469

約数の個数: 32

約数和(自身を含む): 183277440

約数和(自身を除く): 101959160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 751, 1502, 2707, 3004, 3755, 5414, 6008, 7510, 10828, 13535, 15020, 21656, 27070, 30040, 54140, 108280, 2032957, 4065914, 8131828, 10164785, 16263656, 20329570, 40659140, 81318280]

約数ペア:

[(1, 81318280), (2, 40659140), (4, 20329570), (5, 16263656), (8, 10164785), (10, 8131828), (20, 4065914), (40, 2032957), (751, 108280), (1502, 54140), (2707, 30040), (3004, 27070), (3755, 21656), (5414, 15020), (6008, 13535), (7510, 10828)]