641230160

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{195497}}^1$

素因数の和:195551

約数の個数: 40

約数和(自身を含む): 1527230376

約数和(自身を除く): 886000216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 195497, 390994, 781988, 977485, 1563976, 1954970, 3127952, 3909940, 7819880, 8015377, 15639760, 16030754, 32061508, 40076885, 64123016, 80153770, 128246032, 160307540, 320615080, 641230160]

約数ペア:

[(1, 641230160), (2, 320615080), (4, 160307540), (5, 128246032), (8, 80153770), (10, 64123016), (16, 40076885), (20, 32061508), (40, 16030754), (41, 15639760), (80, 8015377), (82, 7819880), (164, 3909940), (205, 3127952), (328, 1954970), (410, 1563976), (656, 977485), (820, 781988), (1640, 390994), (3280, 195497)]