81534940

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{6301}}^1$

素因数の和:6957

約数の個数: 24

約数和(自身を含む): 171515232

約数和(自身を除く): 89980292

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2588, 3235, 6301, 6470, 12602, 12940, 25204, 31505, 63010, 126020, 4076747, 8153494, 16306988, 20383735, 40767470, 81534940]

約数ペア:

[(1, 81534940), (2, 40767470), (4, 20383735), (5, 16306988), (10, 8153494), (20, 4076747), (647, 126020), (1294, 63010), (2588, 31505), (3235, 25204), (6301, 12940), (6470, 12602)]