20109080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16217}}^1$

素因数の和:16259

約数の個数: 32

約数和(自身を含む): 46707840

約数和(自身を除く): 26598760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16217, 32434, 64868, 81085, 129736, 162170, 324340, 502727, 648680, 1005454, 2010908, 2513635, 4021816, 5027270, 10054540, 20109080]

約数ペア:

[(1, 20109080), (2, 10054540), (4, 5027270), (5, 4021816), (8, 2513635), (10, 2010908), (20, 1005454), (31, 648680), (40, 502727), (62, 324340), (124, 162170), (155, 129736), (248, 81085), (310, 64868), (620, 32434), (1240, 16217)]