81050680

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7477}}^1$

素因数の和:7759

約数の個数: 32

約数和(自身を含む): 183061440

約数和(自身を除く): 102010760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 7477, 10840, 14954, 29908, 37385, 59816, 74770, 149540, 299080, 2026267, 4052534, 8105068, 10131335, 16210136, 20262670, 40525340, 81050680]

約数ペア:

[(1, 81050680), (2, 40525340), (4, 20262670), (5, 16210136), (8, 10131335), (10, 8105068), (20, 4052534), (40, 2026267), (271, 299080), (542, 149540), (1084, 74770), (1355, 59816), (2168, 37385), (2710, 29908), (5420, 14954), (7477, 10840)]