28390947

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1021}}^1$

素因数の和:1091

約数の個数: 32

約数和(自身を含む): 43954176

約数和(自身を除く): 15563229

約数列:

[1, 3, 13, 23, 31, 39, 69, 93, 299, 403, 713, 897, 1021, 1209, 2139, 3063, 9269, 13273, 23483, 27807, 31651, 39819, 70449, 94953, 305279, 411463, 727973, 915837, 1234389, 2183919, 9463649, 28390947]

約数ペア:

[(1, 28390947), (3, 9463649), (13, 2183919), (23, 1234389), (31, 915837), (39, 727973), (69, 411463), (93, 305279), (299, 94953), (403, 70449), (713, 39819), (897, 31651), (1021, 27807), (1209, 23483), (2139, 13273), (3063, 9269)]