21058270

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{809}}^1$

素因数の和:972

約数の個数: 32

約数和(自身を含む): 40240800

約数和(自身を除く): 19182530

約数列:

[1, 2, 5, 10, 19, 38, 95, 137, 190, 274, 685, 809, 1370, 1618, 2603, 4045, 5206, 8090, 13015, 15371, 26030, 30742, 76855, 110833, 153710, 221666, 554165, 1108330, 2105827, 4211654, 10529135, 21058270]

約数ペア:

[(1, 21058270), (2, 10529135), (5, 4211654), (10, 2105827), (19, 1108330), (38, 554165), (95, 221666), (137, 153710), (190, 110833), (274, 76855), (685, 30742), (809, 26030), (1370, 15371), (1618, 13015), (2603, 8090), (4045, 5206)]