20297529

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{547}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 36474880

約数和(自身を除く): 16177351

約数列:

[1, 3, 7, 9, 19, 21, 31, 57, 63, 93, 133, 171, 217, 279, 399, 547, 589, 651, 1197, 1641, 1767, 1953, 3829, 4123, 4923, 5301, 10393, 11487, 12369, 16957, 31179, 34461, 37107, 50871, 72751, 93537, 118699, 152613, 218253, 322183, 356097, 654759, 966549, 1068291, 2255281, 2899647, 6765843, 20297529]

約数ペア:

[(1, 20297529), (3, 6765843), (7, 2899647), (9, 2255281), (19, 1068291), (21, 966549), (31, 654759), (57, 356097), (63, 322183), (93, 218253), (133, 152613), (171, 118699), (217, 93537), (279, 72751), (399, 50871), (547, 37107), (589, 34461), (651, 31179), (1197, 16957), (1641, 12369), (1767, 11487), (1953, 10393), (3829, 5301), (4123, 4923)]