17813680

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5431}}^1$

素因数の和:5485

約数の個数: 40

約数和(自身を含む): 42434784

約数和(自身を除く): 24621104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5431, 10862, 21724, 27155, 43448, 54310, 86896, 108620, 217240, 222671, 434480, 445342, 890684, 1113355, 1781368, 2226710, 3562736, 4453420, 8906840, 17813680]

約数ペア:

[(1, 17813680), (2, 8906840), (4, 4453420), (5, 3562736), (8, 2226710), (10, 1781368), (16, 1113355), (20, 890684), (40, 445342), (41, 434480), (80, 222671), (82, 217240), (164, 108620), (205, 86896), (328, 54310), (410, 43448), (656, 27155), (820, 21724), (1640, 10862), (3280, 5431)]