16681640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5279}}^1$

素因数の和:5369

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 21334360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 5279, 10558, 21116, 26395, 42232, 52790, 105580, 211160, 417041, 834082, 1668164, 2085205, 3336328, 4170410, 8340820, 16681640]

約数ペア:

[(1, 16681640), (2, 8340820), (4, 4170410), (5, 3336328), (8, 2085205), (10, 1668164), (20, 834082), (40, 417041), (79, 211160), (158, 105580), (316, 52790), (395, 42232), (632, 26395), (790, 21116), (1580, 10558), (3160, 5279)]