21870992

素因数分解:

$2^4\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 80

約数和(自身を含む): 50830080

約数和(自身を除く): 28959088

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 79, 88, 104, 121, 143, 158, 176, 208, 242, 286, 316, 484, 572, 632, 869, 968, 1027, 1144, 1264, 1331, 1573, 1738, 1936, 2054, 2288, 2662, 3146, 3476, 4108, 5324, 6292, 6952, 8216, 9559, 10648, 11297, 12584, 13904, 16432, 17303, 19118, 21296, 22594, 25168, 34606, 38236, 45188, 69212, 76472, 90376, 105149, 124267, 138424, 152944, 180752, 210298, 248534, 276848, 420596, 497068, 841192, 994136, 1366937, 1682384, 1988272, 2733874, 5467748, 10935496, 21870992]

約数ペア:

[(1, 21870992), (2, 10935496), (4, 5467748), (8, 2733874), (11, 1988272), (13, 1682384), (16, 1366937), (22, 994136), (26, 841192), (44, 497068), (52, 420596), (79, 276848), (88, 248534), (104, 210298), (121, 180752), (143, 152944), (158, 138424), (176, 124267), (208, 105149), (242, 90376), (286, 76472), (316, 69212), (484, 45188), (572, 38236), (632, 34606), (869, 25168), (968, 22594), (1027, 21296), (1144, 19118), (1264, 17303), (1331, 16432), (1573, 13904), (1738, 12584), (1936, 11297), (2054, 10648), (2288, 9559), (2662, 8216), (3146, 6952), (3476, 6292), (4108, 5324)]