21543730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{165721}}^1$

素因数の和:165741

約数の個数: 16

約数和(自身を含む): 41761944

約数和(自身を除く): 20218214

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 165721, 331442, 828605, 1657210, 2154373, 4308746, 10771865, 21543730]

約数ペア:

[(1, 21543730), (2, 10771865), (5, 4308746), (10, 2154373), (13, 1657210), (26, 828605), (65, 331442), (130, 165721)]