201813507

素因数分解:

$3^2\times 7^2\times {\mathrm{421}}^1\times {\mathrm{1087}}^1$

素因数の和:1528

約数の個数: 36

約数和(自身を含む): 340219776

約数和(自身を除く): 138406269

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 421, 441, 1087, 1263, 2947, 3261, 3789, 7609, 8841, 9783, 20629, 22827, 26523, 53263, 61887, 68481, 159789, 185661, 457627, 479367, 1372881, 3203389, 4118643, 9610167, 22423723, 28830501, 67271169, 201813507]

約数ペア:

[(1, 201813507), (3, 67271169), (7, 28830501), (9, 22423723), (21, 9610167), (49, 4118643), (63, 3203389), (147, 1372881), (421, 479367), (441, 457627), (1087, 185661), (1263, 159789), (2947, 68481), (3261, 61887), (3789, 53263), (7609, 26523), (8841, 22827), (9783, 20629)]