78857428

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 159376896

約数和(自身を除く): 80519468

約数列:

[1, 2, 4, 13, 26, 31, 52, 53, 62, 71, 106, 124, 142, 169, 212, 284, 338, 403, 676, 689, 806, 923, 1378, 1612, 1643, 1846, 2201, 2756, 3286, 3692, 3763, 4402, 5239, 6572, 7526, 8804, 8957, 10478, 11999, 15052, 17914, 20956, 21359, 23998, 28613, 35828, 42718, 47996, 48919, 57226, 85436, 97838, 114452, 116653, 195676, 233306, 277667, 371969, 466612, 555334, 635947, 743938, 1110668, 1271894, 1487876, 1516489, 2543788, 3032978, 6065956, 19714357, 39428714, 78857428]

約数ペア:

[(1, 78857428), (2, 39428714), (4, 19714357), (13, 6065956), (26, 3032978), (31, 2543788), (52, 1516489), (53, 1487876), (62, 1271894), (71, 1110668), (106, 743938), (124, 635947), (142, 555334), (169, 466612), (212, 371969), (284, 277667), (338, 233306), (403, 195676), (676, 116653), (689, 114452), (806, 97838), (923, 85436), (1378, 57226), (1612, 48919), (1643, 47996), (1846, 42718), (2201, 35828), (2756, 28613), (3286, 23998), (3692, 21359), (3763, 20956), (4402, 17914), (5239, 15052), (6572, 11999), (7526, 10478), (8804, 8957)]