331848920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{638171}}^1$

素因数の和:638195

約数の個数: 32

約数和(自身を含む): 804096720

約数和(自身を除く): 472247800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 638171, 1276342, 2552684, 3190855, 5105368, 6381710, 8296223, 12763420, 16592446, 25526840, 33184892, 41481115, 66369784, 82962230, 165924460, 331848920]

約数ペア:

[(1, 331848920), (2, 165924460), (4, 82962230), (5, 66369784), (8, 41481115), (10, 33184892), (13, 25526840), (20, 16592446), (26, 12763420), (40, 8296223), (52, 6381710), (65, 5105368), (104, 3190855), (130, 2552684), (260, 1276342), (520, 638171)]