31388715

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:178

約数の個数: 80

約数和(自身を含む): 61471872

約数和(自身を除く): 30083157

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 47, 51, 81, 85, 97, 135, 141, 153, 235, 255, 291, 405, 423, 459, 485, 705, 765, 799, 873, 1269, 1377, 1455, 1649, 2115, 2295, 2397, 2619, 3807, 3995, 4365, 4559, 4947, 6345, 6885, 7191, 7857, 8245, 11985, 13095, 13677, 14841, 19035, 21573, 22795, 24735, 35955, 39285, 41031, 44523, 64719, 68385, 74205, 77503, 107865, 123093, 133569, 205155, 222615, 232509, 323595, 369279, 387515, 615465, 667845, 697527, 1162545, 1846395, 2092581, 3487635, 6277743, 10462905, 31388715]

約数ペア:

[(1, 31388715), (3, 10462905), (5, 6277743), (9, 3487635), (15, 2092581), (17, 1846395), (27, 1162545), (45, 697527), (47, 667845), (51, 615465), (81, 387515), (85, 369279), (97, 323595), (135, 232509), (141, 222615), (153, 205155), (235, 133569), (255, 123093), (291, 107865), (405, 77503), (423, 74205), (459, 68385), (485, 64719), (705, 44523), (765, 41031), (799, 39285), (873, 35955), (1269, 24735), (1377, 22795), (1455, 21573), (1649, 19035), (2115, 14841), (2295, 13677), (2397, 13095), (2619, 11985), (3807, 8245), (3995, 7857), (4365, 7191), (4559, 6885), (4947, 6345)]