21193137

素因数分解:

$3^3\times 7^2\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 37154880

約数和(自身を除く): 15961743

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 83, 147, 189, 193, 249, 441, 579, 581, 747, 1323, 1351, 1737, 1743, 2241, 4053, 4067, 5211, 5229, 9457, 12159, 12201, 15687, 16019, 28371, 36477, 36603, 48057, 85113, 109809, 112133, 144171, 255339, 336399, 432513, 784931, 1009197, 2354793, 3027591, 7064379, 21193137]

約数ペア:

[(1, 21193137), (3, 7064379), (7, 3027591), (9, 2354793), (21, 1009197), (27, 784931), (49, 432513), (63, 336399), (83, 255339), (147, 144171), (189, 112133), (193, 109809), (249, 85113), (441, 48057), (579, 36603), (581, 36477), (747, 28371), (1323, 16019), (1351, 15687), (1737, 12201), (1743, 12159), (2241, 9457), (4053, 5229), (4067, 5211)]