155280680

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{9007}}^1$

素因数の和:9449

約数の個数: 32

約数和(自身を含む): 350231040

約数和(自身を除く): 194950360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 9007, 17240, 18014, 36028, 45035, 72056, 90070, 180140, 360280, 3882017, 7764034, 15528068, 19410085, 31056136, 38820170, 77640340, 155280680]

約数ペア:

[(1, 155280680), (2, 77640340), (4, 38820170), (5, 31056136), (8, 19410085), (10, 15528068), (20, 7764034), (40, 3882017), (431, 360280), (862, 180140), (1724, 90070), (2155, 72056), (3448, 45035), (4310, 36028), (8620, 18014), (9007, 17240)]