28780989

素因数分解:

$3^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 40514400

約数和(自身を除く): 11733411

約数列:

[1, 3, 31, 67, 93, 149, 201, 447, 961, 2077, 2883, 4619, 6231, 9983, 13857, 29949, 64387, 143189, 193161, 309473, 429567, 928419, 9593663, 28780989]

約数ペア:

[(1, 28780989), (3, 9593663), (31, 928419), (67, 429567), (93, 309473), (149, 193161), (201, 143189), (447, 64387), (961, 29949), (2077, 13857), (2883, 9983), (4619, 6231)]