28690137

素因数分解:

$3^2\times 7^2\times {\mathrm{67}}^1\times {\mathrm{971}}^1$

素因数の和:1058

約数の個数: 36

約数和(自身を含む): 48977136

約数和(自身を除く): 20286999

約数列:

[1, 3, 7, 9, 21, 49, 63, 67, 147, 201, 441, 469, 603, 971, 1407, 2913, 3283, 4221, 6797, 8739, 9849, 20391, 29547, 47579, 61173, 65057, 142737, 195171, 428211, 455399, 585513, 1366197, 3187793, 4098591, 9563379, 28690137]

約数ペア:

[(1, 28690137), (3, 9563379), (7, 4098591), (9, 3187793), (21, 1366197), (49, 585513), (63, 455399), (67, 428211), (147, 195171), (201, 142737), (441, 65057), (469, 61173), (603, 47579), (971, 29547), (1407, 20391), (2913, 9849), (3283, 8739), (4221, 6797)]