28907109

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 54419040

約数和(自身を除く): 25511931

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 59, 63, 77, 99, 101, 147, 177, 231, 303, 413, 441, 531, 539, 649, 693, 707, 909, 1111, 1239, 1617, 1947, 2121, 2891, 3333, 3717, 4543, 4851, 4949, 5841, 5959, 6363, 7777, 8673, 9999, 13629, 14847, 17877, 23331, 26019, 31801, 40887, 41713, 44541, 53631, 54439, 65549, 69993, 95403, 125139, 163317, 196647, 286209, 291991, 375417, 458843, 489951, 589941, 875973, 1376529, 2627919, 3211901, 4129587, 9635703, 28907109]

約数ペア:

[(1, 28907109), (3, 9635703), (7, 4129587), (9, 3211901), (11, 2627919), (21, 1376529), (33, 875973), (49, 589941), (59, 489951), (63, 458843), (77, 375417), (99, 291991), (101, 286209), (147, 196647), (177, 163317), (231, 125139), (303, 95403), (413, 69993), (441, 65549), (531, 54439), (539, 53631), (649, 44541), (693, 41713), (707, 40887), (909, 31801), (1111, 26019), (1239, 23331), (1617, 17877), (1947, 14847), (2121, 13629), (2891, 9999), (3333, 8673), (3717, 7777), (4543, 6363), (4851, 5959), (4949, 5841)]