27961857

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 50873472

約数和(自身を除く): 22911615

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 157, 231, 257, 471, 693, 771, 1099, 1413, 1727, 1799, 2313, 2827, 3297, 5181, 5397, 8481, 9891, 12089, 15543, 16191, 19789, 25443, 36267, 40349, 59367, 108801, 121047, 178101, 282443, 363141, 443839, 847329, 1331517, 2541987, 3106873, 3994551, 9320619, 27961857]

約数ペア:

[(1, 27961857), (3, 9320619), (7, 3994551), (9, 3106873), (11, 2541987), (21, 1331517), (33, 847329), (63, 443839), (77, 363141), (99, 282443), (157, 178101), (231, 121047), (257, 108801), (471, 59367), (693, 40349), (771, 36267), (1099, 25443), (1413, 19789), (1727, 16191), (1799, 15543), (2313, 12089), (2827, 9891), (3297, 8481), (5181, 5397)]