18177920

素因数分解:

$2^7\times 5^1\times {\mathrm{28403}}^1$

素因数の和:28422

約数の個数: 32

約数和(自身を含む): 43458120

約数和(自身を除く): 25280200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28403, 56806, 113612, 142015, 227224, 284030, 454448, 568060, 908896, 1136120, 1817792, 2272240, 3635584, 4544480, 9088960, 18177920]

約数ペア:

[(1, 18177920), (2, 9088960), (4, 4544480), (5, 3635584), (8, 2272240), (10, 1817792), (16, 1136120), (20, 908896), (32, 568060), (40, 454448), (64, 284030), (80, 227224), (128, 142015), (160, 113612), (320, 56806), (640, 28403)]