66881840

素因数分解:

$2^4\times 5^1\times {\mathrm{313}}^1\times {\mathrm{2671}}^1$

素因数の和:2997

約数の個数: 40

約数和(自身を含む): 156055488

約数和(自身を除く): 89173648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 313, 626, 1252, 1565, 2504, 2671, 3130, 5008, 5342, 6260, 10684, 12520, 13355, 21368, 25040, 26710, 42736, 53420, 106840, 213680, 836023, 1672046, 3344092, 4180115, 6688184, 8360230, 13376368, 16720460, 33440920, 66881840]

約数ペア:

[(1, 66881840), (2, 33440920), (4, 16720460), (5, 13376368), (8, 8360230), (10, 6688184), (16, 4180115), (20, 3344092), (40, 1672046), (80, 836023), (313, 213680), (626, 106840), (1252, 53420), (1565, 42736), (2504, 26710), (2671, 25040), (3130, 21368), (5008, 13355), (5342, 12520), (6260, 10684)]