18677980

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7129}}^1$

素因数の和:7269

約数の個数: 24

約数和(自身を含む): 39528720

約数和(自身を除く): 20850740

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7129, 14258, 28516, 35645, 71290, 142580, 933899, 1867798, 3735596, 4669495, 9338990, 18677980]

約数ペア:

[(1, 18677980), (2, 9338990), (4, 4669495), (5, 3735596), (10, 1867798), (20, 933899), (131, 142580), (262, 71290), (524, 35645), (655, 28516), (1310, 14258), (2620, 7129)]