642789

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:214

約数の個数: 32

約数和(自身を含む): 1152000

約数和(自身を除く): 509211

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 179, 189, 399, 513, 537, 1197, 1253, 1611, 3401, 3591, 3759, 4833, 10203, 11277, 23807, 30609, 33831, 71421, 91827, 214263, 642789]

約数ペア:

[(1, 642789), (3, 214263), (7, 91827), (9, 71421), (19, 33831), (21, 30609), (27, 23807), (57, 11277), (63, 10203), (133, 4833), (171, 3759), (179, 3591), (189, 3401), (399, 1611), (513, 1253), (537, 1197)]