20542970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:375

約数の個数: 64

約数和(自身を含む): 45639936

約数和(自身を除く): 25096966

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 61, 70, 85, 119, 122, 170, 238, 283, 305, 427, 566, 595, 610, 854, 1037, 1190, 1415, 1981, 2074, 2135, 2830, 3962, 4270, 4811, 5185, 7259, 9622, 9905, 10370, 14518, 17263, 19810, 24055, 33677, 34526, 36295, 48110, 67354, 72590, 86315, 120841, 168385, 172630, 241682, 293471, 336770, 586942, 604205, 1208410, 1467355, 2054297, 2934710, 4108594, 10271485, 20542970]

約数ペア:

[(1, 20542970), (2, 10271485), (5, 4108594), (7, 2934710), (10, 2054297), (14, 1467355), (17, 1208410), (34, 604205), (35, 586942), (61, 336770), (70, 293471), (85, 241682), (119, 172630), (122, 168385), (170, 120841), (238, 86315), (283, 72590), (305, 67354), (427, 48110), (566, 36295), (595, 34526), (610, 33677), (854, 24055), (1037, 19810), (1190, 17263), (1415, 14518), (1981, 10370), (2074, 9905), (2135, 9622), (2830, 7259), (3962, 5185), (4270, 4811)]