20402988

素因数分解:

$2^2\times 3^1\times {\mathrm{131}}^1\times {\mathrm{12979}}^1$

素因数の和:13117

約数の個数: 24

約数和(自身を含む): 47974080

約数和(自身を除く): 27571092

約数列:

[1, 2, 3, 4, 6, 12, 131, 262, 393, 524, 786, 1572, 12979, 25958, 38937, 51916, 77874, 155748, 1700249, 3400498, 5100747, 6800996, 10201494, 20402988]

約数ペア:

[(1, 20402988), (2, 10201494), (3, 6800996), (4, 5100747), (6, 3400498), (12, 1700249), (131, 155748), (262, 77874), (393, 51916), (524, 38937), (786, 25958), (1572, 12979)]