1821633219

素因数分解:

$3^7\times 7^1\times {\mathrm{257}}^1\times {\mathrm{463}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 3141242880

約数和(自身を除く): 1319609661

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 257, 463, 567, 729, 771, 1389, 1701, 1799, 2187, 2313, 3241, 4167, 5103, 5397, 6939, 9723, 12501, 15309, 16191, 20817, 29169, 37503, 48573, 62451, 87507, 112509, 118991, 145719, 187353, 262521, 337527, 356973, 437157, 562059, 787563, 832937, 1012581, 1070919, 1311471, 2362689, 2498811, 3212757, 3934413, 7088067, 7496433, 9638271, 22489299, 28914813, 67467897, 86744439, 202403691, 260233317, 607211073, 1821633219]

約数ペア:

[(1, 1821633219), (3, 607211073), (7, 260233317), (9, 202403691), (21, 86744439), (27, 67467897), (63, 28914813), (81, 22489299), (189, 9638271), (243, 7496433), (257, 7088067), (463, 3934413), (567, 3212757), (729, 2498811), (771, 2362689), (1389, 1311471), (1701, 1070919), (1799, 1012581), (2187, 832937), (2313, 787563), (3241, 562059), (4167, 437157), (5103, 356973), (5397, 337527), (6939, 262521), (9723, 187353), (12501, 145719), (15309, 118991), (16191, 112509), (20817, 87507), (29169, 62451), (37503, 48573)]