64650680

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{5197}}^1$

素因数の和:5519

約数の個数: 32

約数和(自身を含む): 145959840

約数和(自身を除く): 81309160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 5197, 6220, 10394, 12440, 20788, 25985, 41576, 51970, 103940, 207880, 1616267, 3232534, 6465068, 8081335, 12930136, 16162670, 32325340, 64650680]

約数ペア:

[(1, 64650680), (2, 32325340), (4, 16162670), (5, 12930136), (8, 8081335), (10, 6465068), (20, 3232534), (40, 1616267), (311, 207880), (622, 103940), (1244, 51970), (1555, 41576), (2488, 25985), (3110, 20788), (5197, 12440), (6220, 10394)]