21066690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{18979}}^1$

素因数の和:19026

約数の個数: 32

約数和(自身を含む): 51929280

約数和(自身を除く): 30862590

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 37, 74, 111, 185, 222, 370, 555, 1110, 18979, 37958, 56937, 94895, 113874, 189790, 284685, 569370, 702223, 1404446, 2106669, 3511115, 4213338, 7022230, 10533345, 21066690]

約数ペア:

[(1, 21066690), (2, 10533345), (3, 7022230), (5, 4213338), (6, 3511115), (10, 2106669), (15, 1404446), (30, 702223), (37, 569370), (74, 284685), (111, 189790), (185, 113874), (222, 94895), (370, 56937), (555, 37958), (1110, 18979)]