20802460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21227}}^1$

素因数の和:21250

約数の個数: 36

約数和(自身を含む): 50819832

約数和(自身を除く): 30017372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21227, 42454, 84908, 106135, 148589, 212270, 297178, 424540, 594356, 742945, 1040123, 1485890, 2080246, 2971780, 4160492, 5200615, 10401230, 20802460]

約数ペア:

[(1, 20802460), (2, 10401230), (4, 5200615), (5, 4160492), (7, 2971780), (10, 2080246), (14, 1485890), (20, 1040123), (28, 742945), (35, 594356), (49, 424540), (70, 297178), (98, 212270), (140, 148589), (196, 106135), (245, 84908), (490, 42454), (980, 21227)]