21366872

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{347}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 41342400

約数和(自身を除く): 19975528

約数列:

[1, 2, 4, 8, 43, 86, 172, 179, 344, 347, 358, 694, 716, 1388, 1432, 2776, 7697, 14921, 15394, 29842, 30788, 59684, 61576, 62113, 119368, 124226, 248452, 496904, 2670859, 5341718, 10683436, 21366872]

約数ペア:

[(1, 21366872), (2, 10683436), (4, 5341718), (8, 2670859), (43, 496904), (86, 248452), (172, 124226), (179, 119368), (344, 62113), (347, 61576), (358, 59684), (694, 30788), (716, 29842), (1388, 15394), (1432, 14921), (2776, 7697)]