20762810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:706

約数の個数: 32

約数和(自身を含む): 38782800

約数和(自身を除く): 18019990

約数列:

[1, 2, 5, 10, 41, 82, 89, 178, 205, 410, 445, 569, 890, 1138, 2845, 3649, 5690, 7298, 18245, 23329, 36490, 46658, 50641, 101282, 116645, 233290, 253205, 506410, 2076281, 4152562, 10381405, 20762810]

約数ペア:

[(1, 20762810), (2, 10381405), (5, 4152562), (10, 2076281), (41, 506410), (82, 253205), (89, 233290), (178, 116645), (205, 101282), (410, 50641), (445, 46658), (569, 36490), (890, 23329), (1138, 18245), (2845, 7298), (3649, 5690)]