28180047

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{3617}}^1$

素因数の和:3687

約数の個数: 24

約数和(自身を含む): 44544816

約数和(自身を除く): 16364769

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2597, 3617, 7791, 10851, 25319, 75957, 177233, 191701, 531699, 575103, 1341907, 4025721, 9393349, 28180047]

約数ペア:

[(1, 28180047), (3, 9393349), (7, 4025721), (21, 1341907), (49, 575103), (53, 531699), (147, 191701), (159, 177233), (371, 75957), (1113, 25319), (2597, 10851), (3617, 7791)]