27958189

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1\times {\mathrm{421}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 32814720

約数和(自身を除く): 4856531

約数列:

[1, 7, 53, 179, 371, 421, 1253, 2947, 9487, 22313, 66409, 75359, 156191, 527513, 3994027, 27958189]

約数ペア:

[(1, 27958189), (7, 3994027), (53, 527513), (179, 156191), (371, 75359), (421, 66409), (1253, 22313), (2947, 9487)]