21379204

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1693}}^1$

素因数の和:1756

約数の個数: 48

約数和(自身を含む): 47811456

約数和(自身を除く): 26432252

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 41, 44, 77, 82, 154, 164, 287, 308, 451, 574, 902, 1148, 1693, 1804, 3157, 3386, 6314, 6772, 11851, 12628, 18623, 23702, 37246, 47404, 69413, 74492, 130361, 138826, 260722, 277652, 485891, 521444, 763543, 971782, 1527086, 1943564, 3054172, 5344801, 10689602, 21379204]

約数ペア:

[(1, 21379204), (2, 10689602), (4, 5344801), (7, 3054172), (11, 1943564), (14, 1527086), (22, 971782), (28, 763543), (41, 521444), (44, 485891), (77, 277652), (82, 260722), (154, 138826), (164, 130361), (287, 74492), (308, 69413), (451, 47404), (574, 37246), (902, 23702), (1148, 18623), (1693, 12628), (1804, 11851), (3157, 6772), (3386, 6314)]