131240320

素因数分解:

$2^7\times 5^1\times {\mathrm{205063}}^1$

素因数の和:205082

約数の個数: 32

約数和(自身を含む): 313747920

約数和(自身を除く): 182507600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 205063, 410126, 820252, 1025315, 1640504, 2050630, 3281008, 4101260, 6562016, 8202520, 13124032, 16405040, 26248064, 32810080, 65620160, 131240320]

約数ペア:

[(1, 131240320), (2, 65620160), (4, 32810080), (5, 26248064), (8, 16405040), (10, 13124032), (16, 8202520), (20, 6562016), (32, 4101260), (40, 3281008), (64, 2050630), (80, 1640504), (128, 1025315), (160, 820252), (320, 410126), (640, 205063)]