401025008

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{180317}}^1$

素因数の和:180464

約数の個数: 20

約数和(自身を含む): 782580120

約数和(自身を除く): 381555112

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 180317, 360634, 721268, 1442536, 2885072, 25064063, 50128126, 100256252, 200512504, 401025008]

約数ペア:

[(1, 401025008), (2, 200512504), (4, 100256252), (8, 50128126), (16, 25064063), (139, 2885072), (278, 1442536), (556, 721268), (1112, 360634), (2224, 180317)]