21870270

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{81001}}^1$

素因数の和:81017

約数の個数: 32

約数和(自身を含む): 58321440

約数和(自身を除く): 36451170

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 81001, 162002, 243003, 405005, 486006, 729009, 810010, 1215015, 1458018, 2187027, 2430030, 3645045, 4374054, 7290090, 10935135, 21870270]

約数ペア:

[(1, 21870270), (2, 10935135), (3, 7290090), (5, 4374054), (6, 3645045), (9, 2430030), (10, 2187027), (15, 1458018), (18, 1215015), (27, 810010), (30, 729009), (45, 486006), (54, 405005), (90, 243003), (135, 162002), (270, 81001)]