18623720

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1051}}^1$

素因数の和:1505

約数の個数: 32

約数和(自身を含む): 42037920

約数和(自身を除く): 23414200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1051, 1772, 2102, 2215, 3544, 4204, 4430, 5255, 8408, 8860, 10510, 17720, 21020, 42040, 465593, 931186, 1862372, 2327965, 3724744, 4655930, 9311860, 18623720]

約数ペア:

[(1, 18623720), (2, 9311860), (4, 4655930), (5, 3724744), (8, 2327965), (10, 1862372), (20, 931186), (40, 465593), (443, 42040), (886, 21020), (1051, 17720), (1772, 10510), (2102, 8860), (2215, 8408), (3544, 5255), (4204, 4430)]