28160223

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 49996800

約数和(自身を除く): 21836577

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 61, 89, 91, 133, 183, 247, 267, 273, 399, 427, 623, 741, 793, 1157, 1159, 1281, 1691, 1729, 1869, 2379, 3471, 3477, 5073, 5187, 5429, 5551, 8099, 8113, 11837, 15067, 16287, 16653, 21983, 24297, 24339, 35511, 38003, 45201, 65949, 70577, 103151, 105469, 114009, 153881, 211731, 309453, 316407, 461643, 494039, 722057, 1340963, 1482117, 2166171, 4022889, 9386741, 28160223]

約数ペア:

[(1, 28160223), (3, 9386741), (7, 4022889), (13, 2166171), (19, 1482117), (21, 1340963), (39, 722057), (57, 494039), (61, 461643), (89, 316407), (91, 309453), (133, 211731), (183, 153881), (247, 114009), (267, 105469), (273, 103151), (399, 70577), (427, 65949), (623, 45201), (741, 38003), (793, 35511), (1157, 24339), (1159, 24297), (1281, 21983), (1691, 16653), (1729, 16287), (1869, 15067), (2379, 11837), (3471, 8113), (3477, 8099), (5073, 5551), (5187, 5429)]