28420371

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23743}}^1$

素因数の和:23775

約数の個数: 24

約数和(自身を含む): 49387520

約数和(自身を除く): 20967149

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 23743, 71229, 166201, 213687, 451117, 498603, 1353351, 1495809, 3157819, 4060053, 9473457, 28420371]

約数ペア:

[(1, 28420371), (3, 9473457), (7, 4060053), (9, 3157819), (19, 1495809), (21, 1353351), (57, 498603), (63, 451117), (133, 213687), (171, 166201), (399, 71229), (1197, 23743)]