20736885

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 39110400

約数和(自身を除く): 18373515

約数列:

[1, 3, 5, 13, 15, 19, 29, 39, 57, 65, 87, 95, 145, 193, 195, 247, 285, 377, 435, 551, 579, 741, 965, 1131, 1235, 1653, 1885, 2509, 2755, 2895, 3667, 3705, 5597, 5655, 7163, 7527, 8265, 11001, 12545, 16791, 18335, 21489, 27985, 35815, 37635, 47671, 55005, 72761, 83955, 106343, 107445, 143013, 218283, 238355, 319029, 363805, 531715, 715065, 1091415, 1382459, 1595145, 4147377, 6912295, 20736885]

約数ペア:

[(1, 20736885), (3, 6912295), (5, 4147377), (13, 1595145), (15, 1382459), (19, 1091415), (29, 715065), (39, 531715), (57, 363805), (65, 319029), (87, 238355), (95, 218283), (145, 143013), (193, 107445), (195, 106343), (247, 83955), (285, 72761), (377, 55005), (435, 47671), (551, 37635), (579, 35815), (741, 27985), (965, 21489), (1131, 18335), (1235, 16791), (1653, 12545), (1885, 11001), (2509, 8265), (2755, 7527), (2895, 7163), (3667, 5655), (3705, 5597)]