20123930

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 37568016

約数和(自身を除く): 17444086

約数列:

[1, 2, 5, 10, 37, 74, 137, 185, 274, 370, 397, 685, 794, 1370, 1985, 3970, 5069, 10138, 14689, 25345, 29378, 50690, 54389, 73445, 108778, 146890, 271945, 543890, 2012393, 4024786, 10061965, 20123930]

約数ペア:

[(1, 20123930), (2, 10061965), (5, 4024786), (10, 2012393), (37, 543890), (74, 271945), (137, 146890), (185, 108778), (274, 73445), (370, 54389), (397, 50690), (685, 29378), (794, 25345), (1370, 14689), (1985, 10138), (3970, 5069)]