138759880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{495571}}^1$

素因数の和:495589

約数の個数: 32

約数和(自身を含む): 356811840

約数和(自身を除く): 218051960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 495571, 991142, 1982284, 2477855, 3468997, 3964568, 4955710, 6937994, 9911420, 13875988, 17344985, 19822840, 27751976, 34689970, 69379940, 138759880]

約数ペア:

[(1, 138759880), (2, 69379940), (4, 34689970), (5, 27751976), (7, 19822840), (8, 17344985), (10, 13875988), (14, 9911420), (20, 6937994), (28, 4955710), (35, 3964568), (40, 3468997), (56, 2477855), (70, 1982284), (140, 991142), (280, 495571)]