28136241

素因数分解:

$3^5\times 7^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 24148719

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 81, 119, 139, 147, 153, 189, 243, 357, 417, 441, 459, 567, 833, 973, 1071, 1251, 1323, 1377, 1701, 2363, 2499, 2919, 3213, 3753, 3969, 4131, 6811, 7089, 7497, 8757, 9639, 11259, 11907, 16541, 20433, 21267, 22491, 26271, 28917, 33777, 49623, 61299, 63801, 67473, 78813, 115787, 148869, 183897, 191403, 202419, 236439, 347361, 446607, 551691, 574209, 1042083, 1339821, 1655073, 3126249, 4019463, 9378747, 28136241]

約数ペア:

[(1, 28136241), (3, 9378747), (7, 4019463), (9, 3126249), (17, 1655073), (21, 1339821), (27, 1042083), (49, 574209), (51, 551691), (63, 446607), (81, 347361), (119, 236439), (139, 202419), (147, 191403), (153, 183897), (189, 148869), (243, 115787), (357, 78813), (417, 67473), (441, 63801), (459, 61299), (567, 49623), (833, 33777), (973, 28917), (1071, 26271), (1251, 22491), (1323, 21267), (1377, 20433), (1701, 16541), (2363, 11907), (2499, 11259), (2919, 9639), (3213, 8757), (3753, 7497), (3969, 7089), (4131, 6811)]