638951348

素因数分解:

$2^2\times 7^1\times {\mathrm{2917}}^1\times {\mathrm{7823}}^1$

素因数の和:10751

約数の個数: 24

約数和(自身を含む): 1278504192

約数和(自身を除く): 639552844

約数列:

[1, 2, 4, 7, 14, 28, 2917, 5834, 7823, 11668, 15646, 20419, 31292, 40838, 54761, 81676, 109522, 219044, 22819691, 45639382, 91278764, 159737837, 319475674, 638951348]

約数ペア:

[(1, 638951348), (2, 319475674), (4, 159737837), (7, 91278764), (14, 45639382), (28, 22819691), (2917, 219044), (5834, 109522), (7823, 81676), (11668, 54761), (15646, 40838), (20419, 31292)]