639811438

素因数分解:

$2^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{146009}}^1$

素因数の和:146331

約数の個数: 16

約数和(自身を含む): 1100331360

約数和(自身を除く): 460519922

約数列:

[1, 2, 7, 14, 313, 626, 2191, 4382, 146009, 292018, 1022063, 2044126, 45700817, 91401634, 319905719, 639811438]

約数ペア:

[(1, 639811438), (2, 319905719), (7, 91401634), (14, 45700817), (313, 2044126), (626, 1022063), (2191, 292018), (4382, 146009)]