208565480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{121259}}^1$

素因数の和:121313

約数の個数: 32

約数和(自身を含む): 480189600

約数和(自身を除く): 271624120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 121259, 242518, 485036, 606295, 970072, 1212590, 2425180, 4850360, 5214137, 10428274, 20856548, 26070685, 41713096, 52141370, 104282740, 208565480]

約数ペア:

[(1, 208565480), (2, 104282740), (4, 52141370), (5, 41713096), (8, 26070685), (10, 20856548), (20, 10428274), (40, 5214137), (43, 4850360), (86, 2425180), (172, 1212590), (215, 970072), (344, 606295), (430, 485036), (860, 242518), (1720, 121259)]