21866410

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 18568790

約数列:

[1, 2, 5, 10, 79, 89, 158, 178, 311, 395, 445, 622, 790, 890, 1555, 3110, 7031, 14062, 24569, 27679, 35155, 49138, 55358, 70310, 122845, 138395, 245690, 276790, 2186641, 4373282, 10933205, 21866410]

約数ペア:

[(1, 21866410), (2, 10933205), (5, 4373282), (10, 2186641), (79, 276790), (89, 245690), (158, 138395), (178, 122845), (311, 70310), (395, 55358), (445, 49138), (622, 35155), (790, 27679), (890, 24569), (1555, 14062), (3110, 7031)]